{"id":75291,"date":"2026-02-11T22:26:09","date_gmt":"2026-02-11T14:26:09","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/75291.html"},"modified":"2026-02-11T22:26:09","modified_gmt":"2026-02-11T14:26:09","slug":"%e5%a6%82%e4%bd%95%e4%bd%bf%e7%94%a8langgraph4j%e5%b7%a5%e4%bd%9c%e6%b5%81%e6%94%b9%e9%80%a0%e9%a1%b9%e7%9b%ae%e6%b5%81%e7%a8%8b%e5%ae%9e%e8%b7%b5","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/75291.html","title":{"rendered":"\u5982\u4f55\u4f7f\u7528LangGraph4j\u5de5\u4f5c\u6d41\u6539\u9020\u9879\u76ee\u6d41\u7a0b\u5b9e\u8df5"},"content":{"rendered":"

\u9879\u76ee\u8fdb\u884cAI\u5de5\u4f5c\u6d41\u6539\u9020<\/h2>\n

Demo\u6f14\u793a<\/h3>\n

\u5f15\u5165\u4f9d\u8d56：<\/p>\n

<!– LangGraph4j –>
\n<dependency>
\n <groupId>org.bsc.langgraph4j<\/groupId>
\n <artifactId>langgraph4j-core<\/artifactId>
\n <version>1.6.0-rc2<\/version>
\n<\/dependency> <\/p>\n

\u53c2\u8003\u5b98\u65b9\u6587\u6863，\u7f16\u5199LangGraph4j\u7684demo，\u53ef\u4ee5\u770b\u770b\u5de5\u4f5c\u6d41\u7684\u5927\u6982\u8981\u5b9e\u73b0\u7684\u5185\u5bb9：<\/p>\n

\n

\"\"<\/p>\n

1.\u5b9a\u4e49\u72b6\u6001：<\/p>\n

\/\/ Define the state for our graph
\nclass SimpleState extends AgentState {
\n public static final String MESSAGES_KEY = "messages";<\/p>\n

\/\/ Define the schema for the state.
\n \/\/ MESSAGES_KEY will hold a list of strings, and new messages will be appended.
\n public static final Map<String, Channel<?>> SCHEMA = Map.of(
\n MESSAGES_KEY, Channels.appender(ArrayList::new)
\n );<\/p>\n

public SimpleState(Map<String, Object> initData) {
\n super(initData);
\n }<\/p>\n

public List<String> messages() {
\n return this.<List<String>>value("messages")
\n .orElse( List.of() );
\n }
\n} <\/p>\n

2.\u5b9a\u4e49\u8bf7\u6c42\u8282\u70b9\u548c\u54cd\u5e94\u8282\u70b9：<\/p>\n

\/\/ Node that adds a greeting
\nclass GreeterNode implements NodeAction<SimpleState> {
\n @Override
\n public Map<String, Object> apply(SimpleState state) {
\n System.out.println("GreeterNode executing. Current messages: " + state.messages());
\n return Map.of(SimpleState.MESSAGES_KEY, "Hello from GreeterNode!");
\n }
\n}
\n\/\/ Node that adds a response
\nclass ResponderNode implements NodeAction<SimpleState> {
\n @Override
\n public Map<String, Object> apply(SimpleState state) {
\n System.out.println("ResponderNode executing. Current messages: " + state.messages());
\n List<String> currentMessages = state.messages();
\n if (currentMessages.contains("Hello from GreeterNode!")) {
\n return Map.of(SimpleState.MESSAGES_KEY, "Acknowledged greeting!");
\n }
\n return Map.of(SimpleState.MESSAGES_KEY, "No greeting found.");
\n }
\n} <\/p>\n

3.\u6700\u540e\u5b9a\u4e49\u5de5\u4f5c\u6d41\u7ed3\u6784：<\/p>\n

public class SimpleGraphApp {<\/p>\n

public static void main(String[] args) throws GraphStateException {
\n \/\/ Initialize nodes
\n GreeterNode greeterNode = new GreeterNode();
\n ResponderNode responderNode = new ResponderNode();<\/p>\n

\/\/ Define the graph structure
\n var stateGraph = new StateGraph<>(SimpleState.SCHEMA, initData -> new SimpleState(initData))
\n .addNode("greeter", node_async(greeterNode))
\n .addNode("responder", node_async(responderNode))
\n \/\/ Define edges
\n .addEdge(START, "greeter") \/\/ Start with the greeter node
\n .addEdge("greeter", "responder")
\n .addEdge("responder", END) \/\/ End after the responder node
\n ;
\n \/\/ Compile the graph
\n var compiledGraph = stateGraph.compile();<\/p>\n

\/\/ \u6253\u5370\u51fa\u5de5\u4f5c\u6d41\u53ef\u89c6\u5316\u7f16\u6392—\u6587\u672c\u7ed8\u56fe\u65b9\u6cd5\u80fd\u529b
\n GraphRepresentation graph = stateGraph.getGraph(GraphRepresentation.Type.MERMAID, "demo");
\n System.out.println(graph.toString());<\/p>\n

\/\/ Run the graph
\n \/\/ The `stream` method returns an AsyncGenerator.
\n \/\/ For simplicity, we'll collect results. In a real app, you might process them as they arrive.
\n \/\/ Here, the final state after execution is the item of interest.<\/p>\n

for (var item : compiledGraph.stream( Map.of( SimpleState.MESSAGES_KEY, "Let's, begin!" ) ) ) {<\/p>\n

System.out.println( item );
\n }<\/p>\n

}
\n} <\/p>\n

\u6267\u884c\u67e5\u770b\u6548\u679c：<\/p>\n

\n

\"\"<\/p>\n

\u5de5\u4f5c\u6d41\u5728\u9879\u76ee\u4e2d\u7684\u8fd0\u7528\u6539\u9020<\/h3>\n

\u9879\u76ee\u6539\u9020\u601d\u8def\u6d41\u7a0b：<\/p>\n

\u4ee5AI\u751f\u6210\u4ee3\u7801\u7f51\u7ad9\u573a\u666f\u4e3a\u4f8b，<\/p>\n

\u7528\u6237\u8f93\u5165\u63d0\u793a\u8bcd -> Agent\u901a\u8fc7\u5de5\u5177\u8c03\u7528\u4ece\u4e0d\u540c\u7684\u6e20\u9053\u83b7\u53d6\u56fe\u7247\u7d20\u6750 -> \u5185\u5bb9\u56fe\u7247pexels\u7f51\u9875\u641c\u7d22 -> \u63d2\u753b\u56fe\u7247undraw\u6293\u53d6 -> \u6587\u672c\u7ed8\u56fe+\u4e0a\u4f20\u5230COS -> AI\u751f\u6210\u6216MCP\u670d\u52a1Logo\u7b49\u8bbe\u8ba1\u56fe\u7247 -> \u63d0\u793a\u8bcd\u589e\u5f3a\u5173\u8054\u56fe\u7247\u5185\u5bb9\u5230\u539f\u59cb\u63d0\u793a\u8bcd -> \u667a\u80fd\u8def\u7531Agent\u9009\u62e9\u6a21\u5f0f\u751f\u6210\u7f51\u7ad9（\u539f\u751fHTML\u3001\u591a\u6587\u4ef6\u3001Vue\u5de5\u7a0b） -> \u5229\u7528\u641c\u7d22\u5230\u7684\u56fe\u7247\u548c\u6839\u636e\u4e0a\u4e00\u6b65\u786e\u8ba4\u7684\u6a21\u5f0f\u751f\u6210\u7f51\u7ad9 -> \u6587\u4ef6\u4fdd\u5b58\u9879\u76ee\u6784\u5efa\u6253\u5305<\/p>\n

\u5de5\u4f5c\u6d41\u5f00\u53d1\u6b65\u9aa4：<\/p>\n

\u5b9a\u4e49\u5de5\u4f5c\u6d41\u7ed3\u6784 -> \u5b9a\u4e49\u72b6\u6001 -> \u5b9a\u4e49\u5de5\u4f5c\u8282\u70b9（\u5148\u901a\u8fc7\u5047\u6570\u636e\u8fdb\u884c\u6a21\u62df\u72b6\u6001\u6d41\u8f6c）-> \u5f00\u53d1\u771f\u5b9e\u7684\u5de5\u4f5c\u8282\u70b9 -> \u5de5\u4f5c\u6d41\u4e2d\u4f7f\u7528\u8282\u70b9，\u63d0\u4f9b\u5b8c\u6574\u7684\u5de5\u4f5c\u6d41\u670d\u52a1<\/p>\n

\u53ef\u4ee5\u4f7f\u7528AI\u751f\u6210\u5de5\u4f5c\u6d41\u7ed3\u6784，\u63d0\u793a\u8bcd\u5982\u4e0b：<\/p>\n

\u5e2e\u6211\u751f\u6210 LangGraph4j \u5de5\u4f5c\u6d41\u7684\u4ee3\u7801<\/p>\n

## \u5de5\u4f5c\u6d41\u7684\u6d41\u7a0b\u63cf\u8ff0<\/p>\n

\/\/ … \u8865\u5145\u5177\u4f53\u7684\u6d41\u7a0b<\/p>\n

## \u8981\u6c42<\/p>\n

\u5148\u751f\u6210\u57fa\u7840\u7684\u5de5\u4f5c\u6d41\u7ed3\u6784\u4ee3\u7801，\u6bcf\u4e2a\u5de5\u4f5c\u8282\u70b9\u4e2d\u53ea\u8f93\u51fa\u4e00\u53e5\u4fe1\u606f\u5c31\u591f\u4e86，\u4e0d\u7528\u771f\u6b63\u5b9e\u73b0\u5177\u4f53\u7684\u4e1a\u52a1\u903b\u8f91\u3002<\/p>\n

## \u53c2\u8003\u4fe1\u606f<\/p>\n

\u5b98\u65b9\u6587\u6863：@https:\/\/langgraph4j.github.io\/langgraph4j\/core\/low_level\/
\n\u793a\u4f8b\u5de5\u4f5c\u6d41\u5b9e\u73b0：@https:\/\/github.com\/langgraph4j\/langgraph4j-examples\/blob\/main\/langchain4j\/adaptive-rag\/src\/main\/java\/dev\/langchain4j\/adaptiverag\/AdaptiveRag.java<\/p>\n

\u5b9a\u4e49\u7b80\u5355\u5de5\u4f5c\u6d41\u56fe\u7ed3\u6784<\/h4>\n

\u4ee3\u7801\u5982\u4e0b：<\/p>\n

import lombok.extern.slf4j.Slf4j;
\nimport org.bsc.langgraph4j.CompiledGraph;
\nimport org.bsc.langgraph4j.GraphRepresentation;
\nimport org.bsc.langgraph4j.GraphStateException;
\nimport org.bsc.langgraph4j.NodeOutput;
\nimport org.bsc.langgraph4j.action.AsyncNodeAction;
\nimport org.bsc.langgraph4j.prebuilt.MessagesState;
\nimport org.bsc.langgraph4j.prebuilt.MessagesStateGraph;<\/p>\n

import java.util.Map;<\/p>\n

import static org.bsc.langgraph4j.StateGraph.END;
\nimport static org.bsc.langgraph4j.StateGraph.START;
\nimport static org.bsc.langgraph4j.action.AsyncNodeAction.node_async;<\/p>\n

\/**
\n * \u7b80\u5316\u7248\u7f51\u7ad9\u751f\u6210\u5de5\u4f5c\u6d41\u5e94\u7528 – \u4f7f\u7528 MessagesState
\n *\/
\n@Slf4j
\npublic class SimpleWorkflowApp {<\/p>\n

\/**
\n * \u521b\u5efa\u5de5\u4f5c\u8282\u70b9\u7684\u901a\u7528\u65b9\u6cd5
\n *\/
\n static AsyncNodeAction<MessagesState<String>> makeNode(String message) {
\n return node_async(state -> {
\n log.info("\u6267\u884c\u8282\u70b9: {}", message);
\n return Map.of("messages", message);
\n });
\n }<\/p>\n

public static void main(String[] args) throws GraphStateException {
\n \/\/ \u521b\u5efa\u5de5\u4f5c\u6d41\u56fe
\n CompiledGraph<MessagesState<String>> workflow = new MessagesStateGraph<String>()
\n \/\/ \u6dfb\u52a0\u8282\u70b9
\n .addNode("image_collector", makeNode("\u83b7\u53d6\u56fe\u7247\u7d20\u6750"))
\n .addNode("prompt_enhancer", makeNode("\u589e\u5f3a\u63d0\u793a\u8bcd"))
\n .addNode("router", makeNode("\u667a\u80fd\u8def\u7531\u9009\u62e9"))
\n .addNode("code_generator", makeNode("\u7f51\u7ad9\u4ee3\u7801\u751f\u6210"))
\n .addNode("project_builder", makeNode("\u9879\u76ee\u6784\u5efa"))<\/p>\n

\/\/ \u6dfb\u52a0\u8fb9
\n .addEdge(START, "image_collector") \/\/ \u5f00\u59cb -> \u56fe\u7247\u6536\u96c6
\n .addEdge("image_collector", "prompt_enhancer") \/\/ \u56fe\u7247\u6536\u96c6 -> \u63d0\u793a\u8bcd\u589e\u5f3a
\n .addEdge("prompt_enhancer", "router") \/\/ \u63d0\u793a\u8bcd\u589e\u5f3a -> \u667a\u80fd\u8def\u7531
\n .addEdge("router", "code_generator") \/\/ \u667a\u80fd\u8def\u7531 -> \u4ee3\u7801\u751f\u6210
\n .addEdge("code_generator", "project_builder") \/\/ \u4ee3\u7801\u751f\u6210 -> \u9879\u76ee\u6784\u5efa
\n .addEdge("project_builder", END) \/\/ \u9879\u76ee\u6784\u5efa -> \u7ed3\u675f<\/p>\n

\/\/ \u7f16\u8bd1\u5de5\u4f5c\u6d41
\n .compile();<\/p>\n

log.info("\u5f00\u59cb\u6267\u884c\u5de5\u4f5c\u6d41");<\/p>\n

GraphRepresentation graph = workflow.getGraph(GraphRepresentation.Type.MERMAID);
\n log.info("\u5de5\u4f5c\u6d41\u56fe: \\\\n{}", graph.content());<\/p>\n

\/\/ \u6267\u884c\u5de5\u4f5c\u6d41
\n int stepCounter = 1;
\n for (NodeOutput<MessagesState<String>> step : workflow.stream(Map.of())) {
\n log.info("— \u7b2c {} \u6b65\u5b8c\u6210 —", stepCounter);
\n log.info("\u6b65\u9aa4\u8f93\u51fa: {}", step);
\n stepCounter++;
\n }<\/p>\n

log.info("\u5de5\u4f5c\u6d41\u6267\u884c\u5b8c\u6210！");
\n }
\n} <\/p>\n

\u5b9a\u4e49\u72b6\u6001<\/h4>\n

\n

\"\"<\/p>\n

\n

\"\"<\/p>\n

\u5b98\u65b9\u63d0\u4f9b\u7684\u72b6\u6001\u7c7b\u9ed8\u8ba4\u662fMessagesState\u6d88\u606f\u5217\u8868\u7ed3\u6784，\u4f46\u662f\u5f88\u660e\u663e\u6211\u4eec\u662f\u9700\u8981\u7ef4\u62a4\u7684\u72b6\u6001\u662f\u5305\u542b\u591a\u4e2a\u5b57\u6bb5，\u5e94\u8be5\u662f\u4e00\u4e2aMap\u6216\u7c7b\u7684\u7ed3\u6784，\u56e0\u6b64\u6211\u4eec\u9700\u8981\u81ea\u5b9a\u4e49\u4e00\u4e2aWorkflowContext\u72b6\u6001\u4e0a\u4e0b\u6587\u7c7b\u3002\u800c\u4e14\u4e3a\u4e86\u548cLangGraph4j\u5de5\u4f5c\u6d41\u56fe\u9700\u8981\u7684AgentState\u517c\u5bb9，\u6211\u4eec\u53ef\u4ee5\u5c06WorkflowContext\u5bf9\u8c61\u5f53\u4f5c\u4e00\u4e2akey\/value\u5b58\u653e\u5230MessagesState\u4e2d，\u9700\u8981\u65f6\u901a\u8fc7state.data().getKey\u83b7\u53d6\u3002<\/p>\n

\n

\"\"<\/p>\n

\u5b9a\u4e49\u56fe\u7247\u8d44\u6e90\u5bf9\u8c61\u548c\u56fe\u7247\u679a\u4e3e\u7c7b，\u4ee5\u53ca\u81ea\u5b9a\u4e49WorkflowContext\u4e0a\u4e0b\u6587\u7c7b，\u4ee3\u7801\u5982\u4e0b：<\/p>\n

@Getter
\npublic enum ImageCategoryEnum {<\/p>\n

CONTENT("\u5185\u5bb9\u56fe\u7247", "CONTENT"),
\n LOGO("LOGO\u56fe\u7247", "LOGO"),
\n ILLUSTRATION("\u63d2\u753b\u56fe\u7247", "ILLUSTRATION"),
\n ARCHITECTURE("\u67b6\u6784\u56fe\u7247", "ARCHITECTURE");<\/p>\n

private final String text;<\/p>\n

private final String value;<\/p>\n

ImageCategoryEnum(String text, String value) {
\n this.text = text;
\n this.value = value;
\n }<\/p>\n

\/**
\n * \u6839\u636e value \u83b7\u53d6\u679a\u4e3e
\n *
\n * @param value \u679a\u4e3e\u503c\u7684value
\n * @return \u679a\u4e3e\u503c
\n *\/
\n public static ImageCategoryEnum getEnumByValue(String value) {
\n if (ObjUtil.isEmpty(value)) {
\n return null;
\n }
\n for (ImageCategoryEnum anEnum : ImageCategoryEnum.values()) {
\n if (anEnum.value.equals(value)) {
\n return anEnum;
\n }
\n }
\n return null;
\n }
\n}
\n\/**
\n * \u56fe\u7247\u8d44\u6e90\u5bf9\u8c61
\n *\/
\n@Data
\n@Builder
\n@NoArgsConstructor
\n@AllArgsConstructor
\npublic class ImageResource implements Serializable {<\/p>\n

\/**
\n * \u56fe\u7247\u7c7b\u522b
\n *\/
\n private ImageCategoryEnum category;<\/p>\n

\/**
\n * \u56fe\u7247\u63cf\u8ff0
\n *\/
\n private String description;<\/p>\n

\/**
\n * \u56fe\u7247\u5730\u5740
\n *\/
\n private String url;<\/p>\n

@Serial
\n private static final long serialVersionUID = 1L;
\n}
\n\/**
\n * \u5de5\u4f5c\u6d41\u4e0a\u4e0b\u6587 – \u5b58\u50a8\u6240\u6709\u72b6\u6001\u4fe1\u606f
\n *\/
\n@Data
\n@Builder
\n@NoArgsConstructor
\n@AllArgsConstructor
\npublic class WorkflowContext implements Serializable {<\/p>\n

\/**
\n * WorkflowContext \u5728 MessagesState \u4e2d\u7684\u5b58\u50a8key
\n *\/
\n public static final String WORKFLOW_CONTEXT_KEY = "workflowContext";<\/p>\n

\/**
\n * \u5f53\u524d\u6267\u884c\u6b65\u9aa4
\n *\/
\n private String currentStep;<\/p>\n

\/**
\n * \u7528\u6237\u539f\u59cb\u8f93\u5165\u7684\u63d0\u793a\u8bcd
\n *\/
\n private String originalPrompt;<\/p>\n

\/**
\n * \u56fe\u7247\u8d44\u6e90\u5b57\u7b26\u4e32
\n *\/
\n private String imageListStr;<\/p>\n

\/**
\n * \u56fe\u7247\u8d44\u6e90\u5217\u8868
\n *\/
\n private List<ImageResource> imageList;<\/p>\n

\/**
\n * \u589e\u5f3a\u540e\u7684\u63d0\u793a\u8bcd
\n *\/
\n private String enhancedPrompt;<\/p>\n

\/**
\n * \u4ee3\u7801\u751f\u6210\u7c7b\u578b
\n *\/
\n private CodeGenTypeEnum generationType;<\/p>\n

\/**
\n * \u751f\u6210\u7684\u4ee3\u7801\u76ee\u5f55
\n *\/
\n private String generatedCodeDir;<\/p>\n

\/**
\n * \u6784\u5efa\u6210\u529f\u7684\u76ee\u5f55
\n *\/
\n private String buildResultDir;<\/p>\n

\/**
\n * \u9519\u8bef\u4fe1\u606f
\n *\/
\n private String errorMessage;<\/p>\n

@Serial
\n private static final long serialVersionUID = 1L;<\/p>\n

\/\/ ========== \u4e0a\u4e0b\u6587\u64cd\u4f5c\u65b9\u6cd5 ==========<\/p>\n

\/**
\n * \u4ece MessagesState \u4e2d\u83b7\u53d6 WorkflowContext
\n *\/
\n public static WorkflowContext getContext(MessagesState<String> state) {
\n return (WorkflowContext) state.data().get(WORKFLOW_CONTEXT_KEY);
\n }<\/p>\n

\/**
\n * \u5c06 WorkflowContext \u4fdd\u5b58\u5230 MessagesState \u4e2d
\n *\/
\n public static Map<String, Object> saveContext(WorkflowContext context) {
\n return Map.of(WORKFLOW_CONTEXT_KEY, context);
\n }
\n} <\/p>\n

\u4fee\u6539\u5de5\u4f5c\u6d41\u56fe\u7ed3\u6784，\u5f15\u5165\u72b6\u6001\u5b8c\u5584\u7b80\u5355\u5de5\u4f5c\u6d41\u56fe，\u4e0d\u8fdb\u884c\u72b6\u6001\u6d41\u8f6c\u4ee3\u7801\u5982\u4e0b：<\/p>\n

\/**
\n * \u7b80\u5316\u7248\u5e26\u72b6\u6001\u5b9a\u4e49\u7684\u5de5\u4f5c\u6d41 – \u53ea\u5b9a\u4e49\u72b6\u6001\u7ed3\u6784，\u4e0d\u5b9e\u73b0\u5177\u4f53\u6d41\u8f6c
\n *\/
\n@Slf4j
\npublic class SimpleStatefulWorkflowApp {<\/p>\n

\/**
\n * \u521b\u5efa\u5e26\u72b6\u6001\u611f\u77e5\u7684\u5de5\u4f5c\u8282\u70b9
\n *\/
\n static AsyncNodeAction<MessagesState<String>> makeStatefulNode(String nodeName, String message) {
\n return node_async(state -> {
\n WorkflowContext context = WorkflowContext.getContext(state);
\n log.info("\u6267\u884c\u8282\u70b9: {} – {}", nodeName, message);
\n \/\/ \u53ea\u8bb0\u5f55\u5f53\u524d\u6b65\u9aa4，\u4e0d\u505a\u5177\u4f53\u7684\u72b6\u6001\u6d41\u8f6c
\n if (context != null) {
\n context.setCurrentStep(nodeName);
\n }
\n return WorkflowContext.saveContext(context);
\n });
\n }<\/p>\n

public static void main(String[] args) throws GraphStateException {
\n \/\/ \u521b\u5efa\u5de5\u4f5c\u6d41\u56fe
\n CompiledGraph<MessagesState<String>> workflow = new MessagesStateGraph<String>()
\n \/\/ \u6dfb\u52a0\u8282\u70b9 – \u4f7f\u7528\u5e26\u72b6\u6001\u611f\u77e5\u7684\u8282\u70b9
\n .addNode("image_collector", makeStatefulNode("image_collector", "\u83b7\u53d6\u56fe\u7247\u7d20\u6750"))
\n .addNode("prompt_enhancer", makeStatefulNode("prompt_enhancer", "\u589e\u5f3a\u63d0\u793a\u8bcd"))
\n .addNode("router", makeStatefulNode("router", "\u667a\u80fd\u8def\u7531\u9009\u62e9"))
\n .addNode("code_generator", makeStatefulNode("code_generator", "\u7f51\u7ad9\u4ee3\u7801\u751f\u6210"))
\n .addNode("project_builder", makeStatefulNode("project_builder", "\u9879\u76ee\u6784\u5efa"))<\/p>\n

\/\/ \u6dfb\u52a0\u8fb9
\n .addEdge(START, "image_collector")
\n .addEdge("image_collector", "prompt_enhancer")
\n .addEdge("prompt_enhancer", "router")
\n .addEdge("router", "code_generator")
\n .addEdge("code_generator", "project_builder")
\n .addEdge("project_builder", END)<\/p>\n

\/\/ \u7f16\u8bd1\u5de5\u4f5c\u6d41
\n .compile();<\/p>\n

\/\/ \u521d\u59cb\u5316 WorkflowContext – \u53ea\u8bbe\u7f6e\u57fa\u672c\u4fe1\u606f
\n WorkflowContext initialContext = WorkflowContext.builder()
\n .originalPrompt("\u521b\u5efa\u4e00\u4e2a\u5c0f\u697c\u7684\u4e2a\u4eba\u535a\u5ba2\u7f51\u7ad9")
\n .currentStep("\u521d\u59cb\u5316")
\n .build();<\/p>\n

log.info("\u521d\u59cb\u8f93\u5165: {}", initialContext.getOriginalPrompt());
\n log.info("\u5f00\u59cb\u6267\u884c\u5de5\u4f5c\u6d41");<\/p>\n

\/\/ \u663e\u793a\u5de5\u4f5c\u6d41\u56fe
\n GraphRepresentation graph = workflow.getGraph(GraphRepresentation.Type.MERMAID);
\n log.info("\u5de5\u4f5c\u6d41\u56fe:\\\\n{}", graph.content());<\/p>\n

\/\/ \u6267\u884c\u5de5\u4f5c\u6d41
\n int stepCounter = 1;
\n for (NodeOutput<MessagesState<String>> step : workflow.stream(Map.of(WorkflowContext.WORKFLOW_CONTEXT_KEY, initialContext))) {
\n log.info("— \u7b2c {} \u6b65\u5b8c\u6210 —", stepCounter);
\n \/\/ \u663e\u793a\u5f53\u524d\u72b6\u6001
\n WorkflowContext currentContext = WorkflowContext.getContext(step.state());
\n if (currentContext != null) {
\n log.info("\u5f53\u524d\u6b65\u9aa4\u4e0a\u4e0b\u6587: {}", currentContext);
\n }
\n stepCounter++;
\n }
\n log.info("\u5de5\u4f5c\u6d41\u6267\u884c\u5b8c\u6210！");
\n }
\n} <\/p>\n

\u5b9a\u4e49\u5de5\u4f5c\u8282\u70b9（\u5e76\u4f7f\u7528Mock\u5047\u6570\u636e\u6765\u6a21\u62df\u72b6\u6001\u6d41\u8f6c）<\/h4>\n

\u5b9a\u4e49\u56fe\u7247\u6536\u96c6\u8282\u70b9，\u4ee3\u7801\u5982\u4e0b：<\/p>\n

@Slf4j
\npublic class ImageCollectorNode {
\n public static AsyncNodeAction<MessagesState<String>> create() {
\n return node_async(state -> {
\n WorkflowContext context = WorkflowContext.getContext(state);
\n log.info("\u6267\u884c\u8282\u70b9: \u56fe\u7247\u6536\u96c6");<\/p>\n

\/\/ TODO: \u5b9e\u9645\u6267\u884c\u56fe\u7247\u6536\u96c6\u903b\u8f91<\/p>\n

\/\/ \u7b80\u5355\u7684\u5047\u6570\u636e
\n List<ImageResource> imageList = Arrays.asList(
\n ImageResource.builder()
\n .category(ImageCategoryEnum.CONTENT)
\n .description("\u5047\u6570\u636e\u56fe\u72471")
\n .url("https:\/\/www.codefather.cn\/logo.png")
\n .build(),
\n ImageResource.builder()
\n .category(ImageCategoryEnum.LOGO)
\n .description("\u5047\u6570\u636e\u56fe\u72472")
\n .url("https:\/\/www.codefather.cn\/logo.png")
\n .build()
\n );<\/p>\n

\/\/ \u66f4\u65b0\u72b6\u6001
\n context.setCurrentStep("\u56fe\u7247\u6536\u96c6");
\n context.setImageList(imageList);
\n log.info("\u56fe\u7247\u6536\u96c6\u5b8c\u6210，\u5171\u6536\u96c6 {} \u5f20\u56fe\u7247", imageList.size());
\n return WorkflowContext.saveContext(context);
\n });
\n }
\n} <\/p>\n

\u5b9a\u4e49\u63d0\u793a\u8bcd\u589e\u5f3a\u8282\u70b9，\u4ee3\u7801\u5982\u4e0b<\/p>\n

@Slf4j
\npublic class PromptEnhancerNode {
\n public static AsyncNodeAction<MessagesState<String>> create() {
\n return node_async(state -> {
\n WorkflowContext context = WorkflowContext.getContext(state);
\n log.info("\u6267\u884c\u8282\u70b9: \u63d0\u793a\u8bcd\u589e\u5f3a");<\/p>\n

\/\/ TODO: \u5b9e\u9645\u6267\u884c\u63d0\u793a\u8bcd\u589e\u5f3a\u903b\u8f91<\/p>\n

\/\/ \u7b80\u5355\u7684\u5047\u6570\u636e
\n String enhancedPrompt = "\u8fd9\u662f\u589e\u5f3a\u540e\u7684\u5047\u6570\u636e\u63d0\u793a\u8bcd";<\/p>\n

\/\/ \u66f4\u65b0\u72b6\u6001
\n context.setCurrentStep("\u63d0\u793a\u8bcd\u589e\u5f3a");
\n context.setEnhancedPrompt(enhancedPrompt);
\n log.info("\u63d0\u793a\u8bcd\u589e\u5f3a\u5b8c\u6210");
\n return WorkflowContext.saveContext(context);
\n });
\n }
\n} <\/p>\n

\u5b9a\u4e49\u667a\u80fd\u8def\u7531\u8282\u70b9，\u4ee3\u7801\u5982\u4e0b：<\/p>\n

@Slf4j
\npublic class RouterNode {
\n public static AsyncNodeAction<MessagesState<String>> create() {
\n return node_async(state -> {
\n WorkflowContext context = WorkflowContext.getContext(state);
\n log.info("\u6267\u884c\u8282\u70b9: \u667a\u80fd\u8def\u7531");<\/p>\n

\/\/ TODO: \u5b9e\u9645\u6267\u884c\u667a\u80fd\u8def\u7531\u903b\u8f91<\/p>\n

\/\/ \u7b80\u5355\u7684\u5047\u6570\u636e
\n CodeGenTypeEnum generationType = CodeGenTypeEnum.HTML;
\n \/\/ \u66f4\u65b0\u72b6\u6001
\n context.setCurrentStep("\u667a\u80fd\u8def\u7531");
\n context.setGenerationType(generationType);
\n log.info("\u8def\u7531\u51b3\u7b56\u5b8c\u6210，\u9009\u62e9\u7c7b\u578b: {}", generationType.getText());
\n return WorkflowContext.saveContext(context);
\n });
\n }
\n} <\/p>\n

\u5b9a\u4e49\u4ee3\u7801\u751f\u6210\u8282\u70b9，\u4ee3\u7801\u5982\u4e0b：<\/p>\n

@Slf4j
\npublic class CodeGeneratorNode {
\n public static AsyncNodeAction<MessagesState<String>> create() {
\n return node_async(state -> {
\n WorkflowContext context = WorkflowContext.getContext(state);
\n log.info("\u6267\u884c\u8282\u70b9: \u4ee3\u7801\u751f\u6210");<\/p>\n

\/\/ TODO: \u5b9e\u9645\u6267\u884c\u4ee3\u7801\u751f\u6210\u903b\u8f91<\/p>\n

\/\/ \u7b80\u5355\u7684\u5047\u6570\u636e
\n String generatedCodeDir = "\/tmp\/generated\/fake-code";
\n \/\/ \u66f4\u65b0\u72b6\u6001
\n context.setCurrentStep("\u4ee3\u7801\u751f\u6210");
\n context.setGeneratedCodeDir(generatedCodeDir);
\n log.info("\u4ee3\u7801\u751f\u6210\u5b8c\u6210，\u76ee\u5f55: {}", generatedCodeDir);
\n return WorkflowContext.saveContext(context);
\n });
\n }
\n} <\/p>\n

\u5b9a\u4e49\u9879\u76ee\u6784\u5efa\u8282\u70b9，\u4ee3\u7801\u5982\u4e0b：<\/p>\n

@Slf4j
\npublic class ProjectBuilderNode {
\n public static AsyncNodeAction<MessagesState<String>> create() {
\n return node_async(state -> {
\n WorkflowContext context = WorkflowContext.getContext(state);
\n log.info("\u6267\u884c\u8282\u70b9: \u9879\u76ee\u6784\u5efa");<\/p>\n

\/\/ TODO: \u5b9e\u9645\u6267\u884c\u9879\u76ee\u6784\u5efa\u903b\u8f91<\/p>\n

\/\/ \u7b80\u5355\u7684\u5047\u6570\u636e
\n String buildResultDir = "\/tmp\/build\/fake-build";<\/p>\n

\/\/ \u66f4\u65b0\u72b6\u6001
\n context.setCurrentStep("\u9879\u76ee\u6784\u5efa");
\n context.setBuildResultDir(buildResultDir);
\n log.info("\u9879\u76ee\u6784\u5efa\u5b8c\u6210，\u7ed3\u679c\u76ee\u5f55: {}", buildResultDir);
\n return WorkflowContext.saveContext(context);
\n });
\n }
\n} <\/p>\n

\u5de5\u4f5c\u6d41\u56fe\u5e94\u7528\u5404\u4e2a\u5de5\u4f5c\u8282\u70b9（\u6a21\u62df\u6d41\u8f6c）<\/p>\n

@Slf4j
\npublic class WorkflowApp {<\/p>\n

public static void main(String[] args) throws GraphStateException {
\n \/\/ \u521b\u5efa\u5de5\u4f5c\u6d41\u56fe
\n CompiledGraph<MessagesState<String>> workflow = new MessagesStateGraph<String>()
\n \/\/ \u6dfb\u52a0\u8282\u70b9 – \u4f7f\u7528\u771f\u5b9e\u7684\u5de5\u4f5c\u8282\u70b9
\n .addNode("image_collector", ImageCollectorNode.create())
\n .addNode("prompt_enhancer", PromptEnhancerNode.create())
\n .addNode("router", RouterNode.create())
\n .addNode("code_generator", CodeGeneratorNode.create())
\n .addNode("project_builder", ProjectBuilderNode.create())
\n \/\/ \u6dfb\u52a0\u8fb9
\n .addEdge(START, "image_collector")
\n .addEdge("image_collector", "prompt_enhancer")
\n .addEdge("prompt_enhancer", "router")
\n .addEdge("router", "code_generator")
\n .addEdge("code_generator", "project_builder")
\n .addEdge("project_builder", END)
\n \/\/ \u7f16\u8bd1\u5de5\u4f5c\u6d41
\n .compile();<\/p>\n

\/\/ \u521d\u59cb\u5316 WorkflowContext – \u53ea\u8bbe\u7f6e\u57fa\u672c\u4fe1\u606f
\n WorkflowContext initialContext = WorkflowContext.builder()
\n .originalPrompt("\u521b\u5efa\u4e00\u4e2a\u5c0f\u697c\u7684\u4e2a\u4eba\u535a\u5ba2\u7f51\u7ad9")
\n .currentStep("\u521d\u59cb\u5316")
\n .build();
\n log.info("\u521d\u59cb\u8f93\u5165: {}", initialContext.getOriginalPrompt());
\n log.info("\u5f00\u59cb\u6267\u884c\u5de5\u4f5c\u6d41");<\/p>\n

\/\/ \u663e\u793a\u5de5\u4f5c\u6d41\u56fe
\n GraphRepresentation graph = workflow.getGraph(GraphRepresentation.Type.MERMAID);
\n log.info("\u5de5\u4f5c\u6d41\u56fe:\\\\n{}", graph.content());<\/p>\n

\/\/ \u6267\u884c\u5de5\u4f5c\u6d41
\n int stepCounter = 1;
\n for (NodeOutput<MessagesState<String>> step : workflow.stream(Map.of(WorkflowContext.WORKFLOW_CONTEXT_KEY, initialContext))) {
\n log.info("— \u7b2c {} \u6b65\u5b8c\u6210 —", stepCounter);
\n \/\/ \u663e\u793a\u5f53\u524d\u72b6\u6001
\n WorkflowContext currentContext = WorkflowContext.getContext(step.state());
\n if (currentContext != null) {
\n log.info("\u5f53\u524d\u6b65\u9aa4\u4e0a\u4e0b\u6587: {}", currentContext);
\n }
\n stepCounter++;
\n }
\n log.info("\u5de5\u4f5c\u6d41\u6267\u884c\u5b8c\u6210！");
\n }
\n} <\/p>\n

\u4f9d\u6b21\u5f00\u53d1\u771f\u5b9e\u5de5\u4f5c\u8282\u70b9<\/h4>\n

\u6b64\u5904\u6839\u636e\u4e1a\u52a1\u9700\u6c42\u8fdb\u884c\u5f00\u53d1\u8282\u70b9\u3002<\/p>\n

\u6700\u540e\u5728\u5de5\u4f5c\u6d41\u4e2d\u4f7f\u7528\u8282\u70b9<\/h4>\n

\u539f\u672c\u7684WorkflowApp\u5de5\u4f5c\u6d41\u662f\u4f7f\u7528main\u8fdb\u884c\u6a21\u62df\u8fd0\u884c，\u73b0\u5728\u4f7f\u7528\u771f\u5b9e\u5de5\u4f5c\u8282\u70b9\u8fdb\u884c\u5de5\u4f5c\u6d41\u6539\u9020：<\/p>\n

@Slf4j
\npublic class CodeGenWorkflow {<\/p>\n

\/**
\n * \u521b\u5efa\u5b8c\u6574\u7684\u5de5\u4f5c\u6d41
\n *\/
\n public CompiledGraph<MessagesState<String>> createWorkflow() {
\n try {
\n return new MessagesStateGraph<String>()
\n \/\/ \u6dfb\u52a0\u8282\u70b9 – \u4f7f\u7528\u5b8c\u6574\u5b9e\u73b0\u7684\u8282\u70b9
\n .addNode("image_collector", ImageCollectorNode.create())
\n .addNode("prompt_enhancer", PromptEnhancerNode.create())
\n .addNode("router", RouterNode.create())
\n .addNode("code_generator", CodeGeneratorNode.create())
\n .addNode("project_builder", ProjectBuilderNode.create())<\/p>\n

\/\/ \u6dfb\u52a0\u8fb9
\n .addEdge(START, "image_collector")
\n .addEdge("image_collector", "prompt_enhancer")
\n .addEdge("prompt_enhancer", "router")
\n .addEdge("router", "code_generator")
\n .addEdge("code_generator", "project_builder")
\n .addEdge("project_builder", END)<\/p>\n

\/\/ \u7f16\u8bd1\u5de5\u4f5c\u6d41
\n .compile();
\n } catch (GraphStateException e) {
\n throw new BusinessException(ErrorCode.OPERATION_ERROR, "\u5de5\u4f5c\u6d41\u521b\u5efa\u5931\u8d25");
\n }
\n }<\/p>\n

\/**
\n * \u6267\u884c\u5de5\u4f5c\u6d41
\n *\/
\n public WorkflowContext executeWorkflow(String originalPrompt) {
\n CompiledGraph<MessagesState<String>> workflow = createWorkflow();<\/p>\n

\/\/ \u521d\u59cb\u5316 WorkflowContext
\n WorkflowContext initialContext = WorkflowContext.builder()
\n .originalPrompt(originalPrompt)
\n .currentStep("\u521d\u59cb\u5316")
\n .build();<\/p>\n

GraphRepresentation graph = workflow.getGraph(GraphRepresentation.Type.MERMAID);
\n log.info("\u5de5\u4f5c\u6d41\u56fe:\\\\n{}", graph.content());
\n log.info("\u5f00\u59cb\u6267\u884c\u4ee3\u7801\u751f\u6210\u5de5\u4f5c\u6d41");<\/p>\n

WorkflowContext finalContext = null;
\n int stepCounter = 1;
\n for (NodeOutput<MessagesState<String>> step : workflow.stream(
\n Map.of(WorkflowContext.WORKFLOW_CONTEXT_KEY, initialContext))) {
\n log.info("— \u7b2c {} \u6b65\u5b8c\u6210 —", stepCounter);
\n \/\/ \u663e\u793a\u5f53\u524d\u72b6\u6001
\n WorkflowContext currentContext = WorkflowContext.getContext(step.state());
\n if (currentContext != null) {
\n finalContext = currentContext;
\n log.info("\u5f53\u524d\u6b65\u9aa4\u4e0a\u4e0b\u6587: {}", currentContext);
\n }
\n stepCounter++;
\n }
\n log.info("\u4ee3\u7801\u751f\u6210\u5de5\u4f5c\u6d41\u6267\u884c\u5b8c\u6210！");
\n return finalContext;
\n }
\n} <\/p>\n

\u6700\u540e\u7f16\u5199\u5355\u5143\u6d4b\u8bd5\u8fdb\u884c\u5de5\u4f5c\u6d41\u6548\u679c\u6d4b\u8bd5：<\/p>\n

@SpringBootTest
\nclass CodeGenWorkflowTest {<\/p>\n

@Test
\n void testTechBlogWorkflow() {
\n WorkflowContext result = new CodeGenWorkflow().executeWorkflow("\u521b\u5efa\u4e00\u4e2a\u6280\u672f\u535a\u5ba2\u7f51\u7ad9，\u9700\u8981\u5c55\u793a\u7f16\u7a0b\u6559\u7a0b\u548c\u7cfb\u7edf\u67b6\u6784");
\n Assertions.assertNotNull(result);
\n System.out.println("\u751f\u6210\u7c7b\u578b: " + result.getGenerationType());
\n System.out.println("\u751f\u6210\u7684\u4ee3\u7801\u76ee\u5f55: " + result.getGeneratedCodeDir());
\n System.out.println("\u6784\u5efa\u7ed3\u679c\u76ee\u5f55: " + result.getBuildResultDir());
\n }<\/p>\n

@Test
\n void testCorporateWorkflow() {
\n WorkflowContext result = new CodeGenWorkflow().executeWorkflow("\u521b\u5efa\u4f01\u4e1a\u5b98\u7f51，\u5c55\u793a\u516c\u53f8\u5f62\u8c61\u548c\u4e1a\u52a1\u4ecb\u7ecd");
\n Assertions.assertNotNull(result);
\n System.out.println("\u751f\u6210\u7c7b\u578b: " + result.getGenerationType());
\n System.out.println("\u751f\u6210\u7684\u4ee3\u7801\u76ee\u5f55: " + result.getGeneratedCodeDir());
\n System.out.println("\u6784\u5efa\u7ed3\u679c\u76ee\u5f55: " + result.getBuildResultDir());
\n }<\/p>\n

@Test
\n void testVueProjectWorkflow() {
\n WorkflowContext result = new CodeGenWorkflow().executeWorkflow("\u521b\u5efa\u4e00\u4e2aVue\u524d\u7aef\u9879\u76ee，\u5305\u542b\u7528\u6237\u7ba1\u7406\u548c\u6570\u636e\u5c55\u793a\u529f\u80fd");
\n Assertions.assertNotNull(result);
\n System.out.println("\u751f\u6210\u7c7b\u578b: " + result.getGenerationType());
\n System.out.println("\u751f\u6210\u7684\u4ee3\u7801\u76ee\u5f55: " + result.getGeneratedCodeDir());
\n System.out.println("\u6784\u5efa\u7ed3\u679c\u76ee\u5f55: " + result.getBuildResultDir());
\n }<\/p>\n

@Test
\n void testSimpleHtmlWorkflow() {
\n WorkflowContext result = new CodeGenWorkflow().executeWorkflow("\u521b\u5efa\u4e00\u4e2a\u7b80\u5355\u7684\u4e2a\u4eba\u4e3b\u9875");
\n Assertions.assertNotNull(result);
\n System.out.println("\u751f\u6210\u7c7b\u578b: " + result.getGenerationType());
\n System.out.println("\u751f\u6210\u7684\u4ee3\u7801\u76ee\u5f55: " + result.getGeneratedCodeDir());
\n System.out.println("\u6784\u5efa\u7ed3\u679c\u76ee\u5f55: " + result.getBuildResultDir());
\n }
\n} <\/p>\n

\n

\"\"<\/p>\n

\n

\"\"<\/p>\n

\u53ef\u4ee5\u591a\u6d4b\u8bd5\u51e0\u4e2a\u770b\u770b\u6548\u679c：<\/p>\n

\n

\"\"<\/p>\n","protected":false},"excerpt":{"rendered":"

\u9879\u76ee\u8fdb\u884cAI\u5de5\u4f5c\u6d41\u6539\u9020
\nDemo\u6f14\u793a
\n\u5f15\u5165\u4f9d\u8d56：
\n
\norg.bsc.langgraph4jlanggraph4j-core1.6.0-rc2<\/p>\n

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