{"id":32830,"date":"2025-04-26T01:10:50","date_gmt":"2025-04-25T17:10:50","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/32830.html"},"modified":"2025-04-26T01:10:50","modified_gmt":"2025-04-25T17:10:50","slug":"spring-cloud%e4%b9%8b%e8%bf%9c%e7%a8%8b%e8%b0%83%e7%94%a8openfeign%e6%9c%80%e4%bd%b3%e5%ae%9e%e8%b7%b5","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/32830.html","title":{"rendered":"Spring Cloud\u4e4b\u8fdc\u7a0b\u8c03\u7528OpenFeign\u6700\u4f73\u5b9e\u8df5"},"content":{"rendered":"

\"\"<\/p>\n

\u76ee\u5f55<\/p>\n

\n

OpenFeign\u6700\u4f73\u5b9e\u8df5<\/p>\n

\u95ee\u9898\u5f15\u5165<\/p>\n

Feign \u7ee7\u627f\u65b9\u5f0f<\/p>\n

\u521b\u5efaModule<\/p>\n

\u5f15\u5165\u4f9d\u8d56<\/p>\n

\u7f16\u5199\u63a5\u53e3<\/p>\n

\u6253Jar\u5305<\/p>\n

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\u670d\u52a1\u6d88\u8d39\u65b9<\/p>\n

\u542f\u52a8\u670d\u52a1\u5e76\u8bbf\u95ee<\/p>\n

Feign \u62bd\u53d6\u65b9\u5f0f<\/p>\n

\u521b\u5efaModule<\/p>\n

\u5f15\u5165\u4f9d\u8d56<\/p>\n

\u7f16\u5199\u63a5\u53e3<\/p>\n

\u6253Jar\u5305<\/p>\n

\u670d\u52a1\u6d88\u8d39\u65b9<\/p>\n

\u542f\u52a8\u670d\u52a1\u5e76\u8bbf\u95ee<\/p>\n

\u670d\u52a1\u90e8\u7f72<\/p>\n

\u4fee\u6539pom.xml\u6587\u4ef6<\/p>\n

\u89c2\u5bdfNacos\u63a7\u5236\u53f0<\/p>\n

\u8fdc\u7a0b\u8bbf\u95ee<\/p>\n

\n

OpenFeign\u6700\u4f73\u5b9e\u8df5<\/h4>\n

\u95ee\u9898\u5f15\u5165<\/h5>\n

\u6700\u4f73\u5b9e\u8df5, \u5176\u5b9e\u4e5f\u5c31\u662f\u7ecf\u8fc7\u5386\u53f2\u7684\u8fed\u4ee3, \u5728\u9879\u2f6c\u4e2d\u7684\u5b9e\u8df5\u8fc7\u7a0b\u4e2d, \u603b\u7ed3\u51fa\u6765\u7684\u6700\u597d\u7684\u4f7f\u2f64\u2f45\u5f0f.<\/span><\/p>\n

\u901a\u8fc7\u89c2\u5bdf, \u6211\u4eec\u4e5f\u80fd\u770b\u51fa\u6765, Feign\u7684\u5ba2\u6237\u7aef\u4e0e\u670d\u52a1\u63d0\u4f9b\u8005\u7684controller\u4ee3\u7801\u2fae\u5e38\u76f8\u4f3c：<\/p>\n

Feign\u5ba2\u6237\u7aef<\/p>\n

@FeignClient(value = "product-service",path = "\/product")
\npublic interface ProductApi {
\n @RequestMapping("\/{productId}")
\n ProductInfo getProductById(@PathVariable("productId") Integer productId);
\n} <\/p>\n

\u670d\u52a1\u63d0\u4f9b\u65b9Controller<\/p>\n

@RequestMapping("\/product")
\n@RestController
\npublic class ProductController {
\n @Autowired
\n private ProductService productService;<\/p>\n

@RequestMapping("\/{productId}")
\n public ProductInfo getProductById(@PathVariable("productId") Integer productId){
\n return productService.selectProductById(productId);
\n }
\n} <\/p>\n

\u90a3\u4e48\u6709\u6ca1\u6709\u2f00\u79cd\u2f45\u6cd5\u53ef\u4ee5\u7b80\u5316\u8fd9\u79cd\u5199\u6cd5\u5462?<\/p>\n

Feign \u7ee7\u627f\u65b9\u5f0f<\/h5>\n

Feign \u2f40\u6301\u7ee7\u627f\u7684\u2f45\u5f0f, \u6211\u4eec\u53ef\u4ee5\u628a\u2f00\u4e9b\u5e38\u2ec5\u7684\u64cd\u4f5c\u5c01\u88c5\u5230\u63a5\u2f1d\u2fa5. \u6211\u4eec\u53ef\u4ee5\u5b9a\u4e49\u597d\u2f00\u4e2a\u63a5\u2f1d, \u670d\u52a1\u63d0\u4f9b\u2f45\u5b9e\u73b0\u8fd9\u4e2a\u63a5\u2f1d, \u670d\u52a1\u6d88\u8d39\u2f45\u7f16\u5199Feign \u63a5\u2f1d\u7684\u65f6\u5019, \u76f4\u63a5\u7ee7\u627f\u8fd9\u4e2a\u63a5\u53e3\u3002<\/p>\n

\u521b\u5efaModule<\/h6>\n

\u63a5\u2f1d\u53ef\u4ee5\u653e\u5728\u2f00\u4e2a\u516c\u5171\u7684Jar\u5305\u2fa5, \u4f9b\u670d\u52a1\u63d0\u4f9b\u2f45\u548c\u670d\u52a1\u6d88\u8d39\u2f45\u4f7f\u2f64.<\/p>\n

\"\"<\/p>\n

\u5f15\u5165\u4f9d\u8d56<\/h6>\n

<dependencies>
\n <dependency>
\n <groupId>org.springframework.boot<\/groupId>
\n <artifactId>spring-boot-starter-web<\/artifactId>
\n <\/dependency>
\n <dependency>
\n <groupId>org.springframework.cloud<\/groupId>
\n <artifactId>spring-cloud-starter-openfeign<\/artifactId>
\n <\/dependency>
\n<\/dependencies> <\/p>\n

\u7f16\u5199\u63a5\u53e3<\/h6>\n

\u628a\u4e4b\u524dProductApi\u7684\u5185\u5bb9\u79fb\u52a8\u5230Module\u4e2d\u7684ProductInterface\u63a5\u53e3\u4e2d：<\/p>\n

package api;<\/p>\n

import model.ProductInfo;
\nimport org.springframework.cloud.openfeign.SpringQueryMap;
\nimport org.springframework.web.bind.annotation.PathVariable;
\nimport org.springframework.web.bind.annotation.RequestBody;
\nimport org.springframework.web.bind.annotation.RequestMapping;
\nimport org.springframework.web.bind.annotation.RequestParam;<\/p>\n

public interface ProductInterface {
\n @RequestMapping("\/{productId}")
\n ProductInfo getProductById(@PathVariable("productId") Integer productId);<\/p>\n

@RequestMapping("\/p1")
\n String p1(@RequestParam("id") Integer id);<\/p>\n

@RequestMapping("\/p2")
\n String p2(@RequestParam("id") Integer id, @RequestParam("name") String name);<\/p>\n

@RequestMapping("\/p3")
\n String p3(@SpringQueryMap ProductInfo productInfo);<\/p>\n

@RequestMapping("\/p4")
\n String p4(@RequestBody ProductInfo productInfo);
\n} <\/p>\n

\u628a\u4e4b\u524dProductInfo\u7684\u5185\u5bb9\u79fb\u52a8\u5230Module\u4e2d：<\/p>\n

package model;<\/p>\n

import lombok.Data;<\/p>\n

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

@Data
\npublic class ProductInfo {
\n private Integer id;
\n private String productName;
\n private Integer productPrice;
\n private Integer state;
\n private Date createTime;
\n private Date updateTime;
\n} <\/p>\n

\u76ee\u5f55\u7ed3\u6784\u5982\u4e0b：<\/p>\n

\"\"<\/p>\n

\u6253Jar\u5305<\/h6>\n

\u901a\u8fc7Maven\u6253\u5305<\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

\u89c2\u5bdfMaven\u672c\u5730\u4ed3\u5e93, Jar\u5305\u662f\u5426\u6253\u6210\u529f：<\/p>\n

\"\"<\/p>\n

\u670d\u52a1\u63d0\u4f9b\u65b9<\/h6>\n

\u670d\u52a1\u63d0\u4f9b\u2f45\u5b9e\u73b0\u63a5\u53e3 ProductInterface<\/p>\n

package product.controller;<\/p>\n

import api.ProductInterface;
\nimport model.ProductInfo;
\nimport org.springframework.beans.factory.annotation.Autowired;
\nimport org.springframework.web.bind.annotation.PathVariable;
\nimport org.springframework.web.bind.annotation.RequestBody;
\nimport org.springframework.web.bind.annotation.RequestMapping;
\nimport org.springframework.web.bind.annotation.RestController;
\nimport product.service.ProductService;<\/p>\n

@RequestMapping("\/product")
\n@RestController
\npublic class ProductController implements ProductInterface {
\n @Autowired
\n private ProductService productService;<\/p>\n

@RequestMapping("\/{productId}")
\n public ProductInfo getProductById(@PathVariable("productId") Integer productId){
\n return productService.selectProductById(productId);
\n }<\/p>\n

@RequestMapping("\/p1")
\n public String p1(Integer id){
\n return "product-service \u63a5\u6536\u5230\u53c2\u6570, id:"+id;
\n }
\n @RequestMapping("\/p2")
\n public String p2(Integer id, String name){
\n return "product-service \u63a5\u6536\u5230\u53c2\u6570, id:"+id+",name:"+name;
\n }
\n @RequestMapping("\/p3")
\n public String p3(ProductInfo productInfo){
\n return "product-service \u63a5\u6536\u5230\u53c2\u6570: productInfo"+productInfo.toString();
\n }<\/p>\n

@RequestMapping("\/p4")
\n public String p4(@RequestBody ProductInfo productInfo){
\n return "product-service \u63a5\u6536\u5230\u53c2\u6570: productInfo"+productInfo.toString();
\n }
\n} <\/p>\n

\u670d\u52a1\u6d88\u8d39\u65b9<\/h6>\n

\u670d\u52a1\u6d88\u8d39\u2f45\u7ee7\u627fProductInterface<\/p>\n

package order.api;<\/p>\n

import api.ProductInterface;
\nimport org.springframework.cloud.openfeign.FeignClient;<\/p>\n

@FeignClient(value = "product-service",path = "\/product")
\npublic interface ProductApi extends ProductInterface {
\n} <\/p>\n

\u542f\u52a8\u670d\u52a1\u5e76\u8bbf\u95ee<\/h6>\n

\"\"<\/p>\n

\"\"<\/p>\n

Feign \u62bd\u53d6\u65b9\u5f0f<\/h5>\n

\u5b98\u2f45\u63a8\u8350Feign\u7684\u4f7f\u2f64\u2f45\u5f0f\u4e3a\u7ee7\u627f\u7684\u2f45\u5f0f, \u4f46\u662f\u4f01\u4e1a\u5f00\u53d1\u4e2d, \u66f4\u591a\u662f\u628aFeign\u63a5\u2f1d\u62bd\u53d6\u4e3a\u2f00\u4e2a\u72ec\u2f74\u7684\u6a21\u5757(\u505a\u6cd5\u548c\u7ee7\u627f\u76f8\u4f3c, \u4f46\u7406\u5ff5\u4e0d\u540c).<\/p>\n

\u64cd\u4f5c\u2f45\u6cd5: \u5c06Feign\u7684Client\u62bd\u53d6\u4e3a\u2f00\u4e2a\u72ec\u2f74\u7684\u6a21\u5757, \u5e76\u628a\u6d89\u53ca\u5230\u7684\u5b9e\u4f53\u7c7b\u7b49\u90fd\u653e\u5728\u8fd9\u4e2a\u6a21\u5757\u4e2d, \u6253\u6210\u2f00\u4e2aJar. \u670d\u52a1\u6d88\u8d39\u2f45\u53ea\u9700\u8981\u4f9d\u8d56\u8be5Jar\u5305\u5373\u53ef. \u8fd9\u79cd\u2f45\u5f0f\u5728\u4f01\u4e1a\u4e2d\u2f50\u8f83\u5e38\u2ec5, Jar\u5305\u901a\u5e38\u7531\u670d\u52a1\u63d0\u4f9b\u2f45\u6765\u5b9e\u73b0.\u00a0<\/p>\n

\u521b\u5efaModule<\/h6>\n

\"\"<\/p>\n

\u5f15\u5165\u4f9d\u8d56<\/h6>\n

<dependency>
\n <groupId>org.springframework.cloud<\/groupId>
\n <artifactId>spring-cloud-starter-openfeign<\/artifactId>
\n<\/dependency> <\/p>\n

\u7f16\u5199\u63a5\u53e3<\/h6>\n

\u628a\u4e4b\u524dProductApi\u7684\u5185\u5bb9\u79fb\u52a8\u5230Module\u4e2d\u7684ProductInterface\u63a5\u53e3\u4e2d：<\/p>\n

package api;<\/p>\n

import model.ProductInfo;
\nimport org.springframework.cloud.openfeign.SpringQueryMap;
\nimport org.springframework.web.bind.annotation.PathVariable;
\nimport org.springframework.web.bind.annotation.RequestBody;
\nimport org.springframework.web.bind.annotation.RequestMapping;
\nimport org.springframework.web.bind.annotation.RequestParam;<\/p>\n

public interface ProductInterface {
\n @RequestMapping("\/{productId}")
\n ProductInfo getProductById(@PathVariable("productId") Integer productId);<\/p>\n

@RequestMapping("\/p1")
\n String p1(@RequestParam("id") Integer id);<\/p>\n

@RequestMapping("\/p2")
\n String p2(@RequestParam("id") Integer id, @RequestParam("name") String name);<\/p>\n

@RequestMapping("\/p3")
\n String p3(@SpringQueryMap ProductInfo productInfo);<\/p>\n

@RequestMapping("\/p4")
\n String p4(@RequestBody ProductInfo productInfo);
\n} <\/p>\n

\u628a\u4e4b\u524dProductInfo\u7684\u5185\u5bb9\u79fb\u52a8\u5230Module\u4e2d：<\/p>\n

package model;<\/p>\n

import lombok.Data;<\/p>\n

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

@Data
\npublic class ProductInfo {
\n private Integer id;
\n private String productName;
\n private Integer productPrice;
\n private Integer state;
\n private Date createTime;
\n private Date updateTime;
\n} <\/p>\n

\u76ee\u5f55\u7ed3\u6784\u5982\u4e0b：<\/p>\n

\"\"<\/p>\n

\u6253Jar\u5305<\/h6>\n

\u901a\u8fc7Maven\u6253\u5305<\/p>\n

\"\"<\/p>\n

\"\"<\/p>\n

\u89c2\u5bdfMaven\u672c\u5730\u4ed3\u5e93, Jar\u5305\u662f\u5426\u6253\u6210\u529f：<\/p>\n

\"\"<\/p>\n

\u670d\u52a1\u6d88\u8d39\u65b9<\/h6>\n

\u5220\u9664ProductInfo\u548cProductApi<\/p>\n

\u5f15\u5165\u4f9d\u8d56<\/p>\n

<dependency>
\n <groupId>com.wmh<\/groupId>
\n <artifactId>product-api<\/artifactId>
\n <version>1.0-SNAPSHOT<\/version>
\n <scope>compile<\/scope>
\n<\/dependency> <\/p>\n

\u6307\u5b9a\u626b\u63cf\u7c7b<\/p>\n

\u4e0b\u9762\u6211\u4eec\u4f7f\u7528@EnableFeignClients(clients = {ProductApi.class})\u6765\u6307\u5b9a\u626b\u63cf\u7c7b，<\/p>\n

\u5f53\u7136\u4e5f\u53ef\u4ee5\u4f7f\u7528@EnableFeignClients(basePackages = {"api"})\u6307\u5b9a\u626b\u63cf\u7c7b\u3002<\/p>\n

package order;<\/p>\n

import api.ProductApi;
\nimport org.springframework.boot.SpringApplication;
\nimport org.springframework.boot.autoconfigure.SpringBootApplication;
\nimport org.springframework.cloud.openfeign.EnableFeignClients;<\/p>\n

@EnableFeignClients(clients = {ProductApi.class})
\n@SpringBootApplication
\npublic class OrderServiceApplication {
\n public static void main(String[] args) {
\n SpringApplication.run(OrderServiceApplication.class, args);
\n }
\n} <\/p>\n

\u5982\u679c\u4e0d\u6307\u5b9a\u626b\u63cf\u7c7b\u7684\u8bdd，\u8fd0\u884c\u7a0b\u5e8f\u4f1a\u5931\u8d25\u5e76\u62a5\u9519：<\/p>\n

\"\"<\/p>\n

\u539f\u56e0\u662f\u56e0\u4e3aorder-service\u7684\u542f\u52a8\u7c7bOrderServiceApplication\u53ea\u4f1a\u626b\u63cf\u542f\u52a8\u7c7b\u6240\u5728\u76ee\u5f55，\u800cProductApi\u5e76\u4e0d\u5728\u5176\u626b\u63cf\u8def\u5f84\u5185，\u56e0\u6b64\u9700\u8981\u6307\u5b9a\u626b\u63cf\u7c7b\u3002<\/p>\n

\u542f\u52a8\u670d\u52a1\u5e76\u8bbf\u95ee<\/h6>\n

\"\"<\/p>\n

\u670d\u52a1\u90e8\u7f72<\/h5>\n

1. \u4fee\u6539\u6570\u636e\u5e93, Nacos\u7b49\u76f8\u5173\u914d\u7f6e 2. \u5bf9\u4e24\u4e2a\u670d\u52a1\u8fdb\u2f8f\u6253\u5305 Maven\u6253\u5305\u9ed8\u8ba4\u662f\u4ece\u8fdc\u7a0b\u4ed3\u5e93\u4e0b\u8f7d\u7684, product-api \u8fd9\u4e2a\u5305\u5728\u672c\u5730, \u6709\u4ee5\u4e0b\u89e3\u51b3\u2f45\u6848：<\/p>\n

\u25e6 \u4e0a\u4f20\u5230Maven\u4e2d\u592e\u4ed3\u5e93(\u2f50\u8f83\u2fc7\u70e6)[\u4e0d\u63a8\u8350] \u25e6 \u642d\u5efaMaven\u79c1\u670d, \u4e0a\u4f20Jar\u5305\u5230\u79c1\u670d[\u4f01\u4e1a\u63a8\u8350] \u25e6 \u4ece\u672c\u5730\u8bfb\u53d6Jar\u5305[\u4e2a\u2f08\u5b66\u4e60\u9636\u6bb5\u63a8\u8350]<\/p>\n

\u524d\u4e24\u79cd\u2f45\u6cd5\u2f50\u8f83\u590d\u6742, \u54b1\u4eec\u4f7f\u2f64\u7b2c\u4e09\u79cd\u2f45\u5f0f\u3002<\/p>\n

\u4fee\u6539pom.xml\u6587\u4ef6<\/h6>\n

\"\"<\/p>\n

\"\"<\/p>\n

\u5982\u679c\u4e0d\u914d\u7f6e\u4e0a\u56fe\u6240\u793a\u7684\u4e00\u4e0b\u5185\u5bb9，\u9879\u76ee\u542f\u52a8\u4f1a\u5931\u8d25\u5e76\u62a5\u9519：<\/p>\n

<configuration>
\n <includeSystemScope>true<\/includeSystemScope>
\n<\/configuration> <\/p>\n

\"\"<\/p>\n

3. \u4e0a\u4f20jar\u5230Linux\u670d\u52a1\u5668 4. \u542f\u52a8Nacos \u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u00a0\u542f\u52a8\u524d\u6700\u597d\u628adata\u6570\u636e\u5220\u9664\u6389. 5. \u542f\u52a8\u670d\u52a1<\/p>\n

#\u540e\u53f0\u542f\u52a8order-service, \u5e76\u8bbe\u7f6e\u8f93\u51fa\u2f47\u5fd7\u5230logs\/order.log nohup java -jar order-service.jar >logs\/order.log &<\/p>\n

#\u540e\u53f0\u542f\u52a8product-service, \u5e76\u8bbe\u7f6e\u8f93\u51fa\u2f47\u5fd7\u5230logs\/order.log nohup java -jar product-service.jar >logs\/product-9090.log &<\/p>\n

#\u542f\u52a8\u5b9e\u4f8b, \u6307\u5b9a\u7aef\u2f1d\u53f7\u4e3a9091 nohup java -jar product-service.jar –server.port=9091 >logs\/product-9091.log &<\/p>\n

\u89c2\u5bdfNacos\u63a7\u5236\u53f0<\/h6>\n

\"\"<\/p>\n

\u8fdc\u7a0b\u8bbf\u95ee<\/h6>\n

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

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