{"id":102026,"date":"2026-09-08T03:42:46","date_gmt":"2026-09-07T19:42:46","guid":{"rendered":"https:\/\/www.wsisp.com\/helps\/102026.html"},"modified":"2026-09-08T03:42:46","modified_gmt":"2026-09-07T19:42:46","slug":"%e6%9c%80%e6%96%b0%e5%a4%a7%e6%95%b0%e6%8d%ae%e6%af%95%e4%b8%9a%e8%ae%be%e8%ae%a1%e9%80%89%e9%a2%98%e6%8e%a8%e8%8d%90-%e5%9f%ba%e4%ba%8e%e5%a4%a7%e6%95%b0%e6%8d%ae%e7%9a%84%e6%b0%b4%e8%b4%a8%e5%a4%9a","status":"publish","type":"post","link":"https:\/\/www.wsisp.com\/helps\/102026.html","title":{"rendered":"\u6700\u65b0\u5927\u6570\u636e\u6bd5\u4e1a\u8bbe\u8ba1\u9009\u9898\u63a8\u8350-\u57fa\u4e8e\u5927\u6570\u636e\u7684\u6c34\u8d28\u591a\u6307\u6807\u5173\u8054\u5206\u6790\u4e0e\u53ef\u89c6\u5316\u7684\u8bbe\u8ba1\u4e0e\u5b9e\u73b0-\u5927\u6570\u636e-Spark-Hadoop-Bigdata"},"content":{"rendered":"<p>\u2728\u4f5c\u8005\u4e3b\u9875&#xff1a;IT\u7814\u7a76\u5ba4\u2728 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Boot(Spring&#043;SpringMVC&#043;Mybatis)&#xff08;\u4e24\u4e2a\u7248\u672c\u90fd\u652f\u6301&#xff09;<\/li>\n<li>\u524d\u7aef&#xff1a;Vue&#043;ElementUI&#043;Echarts&#043;HTML&#043;CSS&#043;JavaScript&#043;jQuery<\/li>\n<li>\u8be6\u7ec6\u6280\u672f\u70b9&#xff1a;Hadoop\u3001HDFS\u3001Spark\u3001Spark SQL\u3001Pandas\u3001NumPy<\/li>\n<li>\u6570\u636e\u5e93&#xff1a;MySQL<\/li>\n<\/ul>\n<h2>\u4e09\u3001\u7cfb\u7edf\u754c\u9762\u5c55\u793a<\/h2>\n<ul>\n<li>\u57fa\u4e8e\u5927\u6570\u636e\u7684\u6c34\u8d28\u591a\u6307\u6807\u5173\u8054\u5206\u6790\u4e0e\u53ef\u89c6\u5316\u7684\u8bbe\u8ba1\u4e0e\u5b9e\u73b0\u754c\u9762\u5c55\u793a&#xff1a; <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260907194242-6a9f13b2e699e.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260907194243-6a9f13b34b582.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260907194243-6a9f13b3a6b67.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260907194244-6a9f13b4179ed.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260907194244-6a9f13b46f247.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260907194244-6a9f13b4d87d0.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260907194245-6a9f13b542646.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/> <img decoding=\"async\" src=\"https:\/\/www.wsisp.com\/helps\/wp-content\/uploads\/2026\/09\/20260907194245-6a9f13b592248.png\" alt=\"\u5728\u8fd9\u91cc\u63d2\u5165\u56fe\u7247\u63cf\u8ff0\" \/><\/li>\n<\/ul>\n<h2>\u56db\u3001\u4ee3\u7801\u53c2\u8003<\/h2>\n<ul>\n<li>\u9879\u76ee\u5b9e\u6218\u4ee3\u7801\u53c2\u8003&#xff1a;<\/li>\n<\/ul>\n<p>SparkSession spark &#061; SparkSession.builder().appName(&#034;WaterQualityAnalysis&#034;).master(&#034;local[*]&#034;).getOrCreate();<br \/>\n\/\/ \u529f\u80fd\u4e00&#xff1a;\u6307\u6807\u5173\u8054\u5206\u6790 &#8211; \u8ba1\u7b97\u6307\u5b9a\u6c34\u8d28\u6307\u6807\u4e4b\u95f4\u7684\u76f8\u5173\u7cfb\u6570\u77e9\u9635<br \/>\nDataset&lt;Row&gt; df &#061; spark.read().option(&#034;header&#034;, true).option(&#034;inferSchema&#034;, true).csv(&#034;hdfs:\/\/localhost:9000\/water_data\/*.csv&#034;);<br \/>\nList&lt;String&gt; cols &#061; Arrays.asList(&#034;ph&#034;, &#034;dissolved_oxygen&#034;, &#034;permanganate&#034;, &#034;ammonia_nitrogen&#034;, &#034;total_phosphorus&#034;);<br \/>\nStructType schema &#061; df.schema();<br \/>\ndouble[][] corrMatrix &#061; new double[cols.size()][cols.size()];<br \/>\nfor (int i &#061; 0; i &lt; cols.size(); i&#043;&#043;) {<br \/>\n    for (int j &#061; 0; j &lt; cols.size(); j&#043;&#043;) {<br \/>\n        Column col1 &#061; new Column(cols.get(i));<br \/>\n        Column col2 &#061; new Column(cols.get(j));<br \/>\n        double corr &#061; df.stat().corr(cols.get(i), cols.get(j));<br \/>\n        corrMatrix[i][j] &#061; Double.isNaN(corr) ? 0.0 : corr;<br \/>\n    }<br \/>\n}<br \/>\nList&lt;Row&gt; resultRows &#061; new ArrayList&lt;&gt;();<br \/>\nfor (int i &#061; 0; i &lt; cols.size(); i&#043;&#043;) {<br \/>\n    Row row &#061; RowFactory.create(cols.get(i), corrMatrix[i][0], corrMatrix[i][1], corrMatrix[i][2], corrMatrix[i][3], corrMatrix[i][4]);<br \/>\n    resultRows.add(row);<br \/>\n}<br \/>\nDataset&lt;Row&gt; resultDf &#061; spark.createDataFrame(resultRows, StructType.fromDDL(&#034;indicator STRING, ph DOUBLE, dissolved_oxygen DOUBLE, permanganate DOUBLE, ammonia_nitrogen DOUBLE, total_phosphorus DOUBLE&#034;));<br \/>\nresultDf.write().mode(&#034;overwrite&#034;).option(&#034;header&#034;, true).csv(&#034;hdfs:\/\/localhost:9000\/output\/correlation_result&#034;);<br \/>\n\/\/ \u529f\u80fd\u4e8c&#xff1a;\u8fbe\u6807\u8bc4\u4ef7\u5206\u6790 &#8211; \u6839\u636e\u56fd\u5bb6\u6807\u51c6\u5224\u5b9a\u6bcf\u6761\u76d1\u6d4b\u8bb0\u5f55\u7684\u8fbe\u6807\u72b6\u6001\u5e76\u7edf\u8ba1\u8fbe\u6807\u7387<br \/>\nDataset&lt;Row&gt; evalDf &#061; spark.read().option(&#034;header&#034;, true).option(&#034;inferSchema&#034;, true).csv(&#034;hdfs:\/\/localhost:9000\/water_data\/*.csv&#034;);<br \/>\nDataset&lt;Row&gt; evaluated &#061; evalDf.withColumn(&#034;ph_qualified&#034;, when(col(&#034;ph&#034;).between(6.5, 8.5), 1).otherwise(0))<br \/>\n.withColumn(&#034;do_qualified&#034;, when(col(&#034;dissolved_oxygen&#034;).geq(5.0), 1).otherwise(0))<br \/>\n.withColumn(&#034;permanganate_qualified&#034;, when(col(&#034;permanganate&#034;).leq(6.0), 1).otherwise(0))<br \/>\n.withColumn(&#034;ammonia_qualified&#034;, when(col(&#034;ammonia_nitrogen&#034;).leq(1.0), 1).otherwise(0))<br \/>\n.withColumn(&#034;phosphorus_qualified&#034;, when(col(&#034;total_phosphorus&#034;).leq(0.2), 1).otherwise(0))<br \/>\n.withColumn(&#034;all_qualified&#034;, when(col(&#034;ph_qualified&#034;).plus(col(&#034;do_qualified&#034;)).plus(col(&#034;permanganate_qualified&#034;)).plus(col(&#034;ammonia_qualified&#034;)).plus(col(&#034;phosphorus_qualified&#034;)).equalTo(5), 1).otherwise(0));<br \/>\ndouble passCount &#061; evaluated.filter(col(&#034;all_qualified&#034;).equalTo(1)).count();<br \/>\ndouble totalCount &#061; evaluated.count();<br \/>\ndouble passRate &#061; totalCount &#061;&#061; 0 ? 0.0 : (passCount \/ totalCount) * 100;<br \/>\nList&lt;Row&gt; rateRows &#061; new ArrayList&lt;&gt;();<br \/>\nrateRows.add(RowFactory.create(passCount, totalCount, passRate));<br \/>\nDataset&lt;Row&gt; rateDf &#061; spark.createDataFrame(rateRows, StructType.fromDDL(&#034;passed LONG, total LONG, rate DOUBLE&#034;));<br \/>\nrateDf.write().mode(&#034;overwrite&#034;).option(&#034;header&#034;, true).csv(&#034;hdfs:\/\/localhost:9000\/output\/qualification_rate&#034;);<br \/>\n\/\/ \u529f\u80fd\u4e09&#xff1a;\u98ce\u9669\u6d1e\u5bdf\u5206\u6790 &#8211; \u8bc6\u522b\u591a\u6307\u6807\u540c\u65f6\u8d85\u6807\u7684\u9ad8\u98ce\u9669\u76d1\u6d4b\u70b9\u4f4d<br \/>\nDataset&lt;Row&gt; riskDf &#061; spark.read().option(&#034;header&#034;, true).option(&#034;inferSchema&#034;, true).csv(&#034;hdfs:\/\/localhost:9000\/water_data\/*.csv&#034;);<br \/>\nDataset&lt;Row&gt; riskFlagged &#061; riskDf.withColumn(&#034;ph_risk&#034;, when(col(&#034;ph&#034;).lt(6.0).or(col(&#034;ph&#034;).gt(9.0)), 1).otherwise(0))<br \/>\n.withColumn(&#034;do_risk&#034;, when(col(&#034;dissolved_oxygen&#034;).lt(3.0), 1).otherwise(0))<br \/>\n.withColumn(&#034;permanganate_risk&#034;, when(col(&#034;permanganate&#034;).gt(10.0), 1).otherwise(0))<br \/>\n.withColumn(&#034;ammonia_risk&#034;, when(col(&#034;ammonia_nitrogen&#034;).gt(2.0), 1).otherwise(0))<br \/>\n.withColumn(&#034;phosphorus_risk&#034;, when(col(&#034;total_phosphorus&#034;).gt(0.4), 1).otherwise(0))<br \/>\n.withColumn(&#034;risk_score&#034;, col(&#034;ph_risk&#034;).plus(col(&#034;do_risk&#034;)).plus(col(&#034;permanganate_risk&#034;)).plus(col(&#034;ammonia_risk&#034;)).plus(col(&#034;phosphorus_risk&#034;)));<br \/>\nDataset&lt;Row&gt; highRisk &#061; riskFlagged.filter(col(&#034;risk_score&#034;).geq(3));<br \/>\nList&lt;Row&gt; sortedRows &#061; highRisk.select(&#034;monitoring_point&#034;, &#034;monitoring_time&#034;, &#034;risk_score&#034;, &#034;ph&#034;, &#034;dissolved_oxygen&#034;, &#034;permanganate&#034;, &#034;ammonia_nitrogen&#034;, &#034;total_phosphorus&#034;).orderBy(col(&#034;risk_score&#034;).desc()).limit(20).collectAsList();<br \/>\nList&lt;Row&gt; outputRows &#061; new ArrayList&lt;&gt;();<br \/>\nfor (Row r : sortedRows) {<br \/>\n    outputRows.add(RowFactory.create(r.getAs(&#034;monitoring_point&#034;), r.getAs(&#034;monitoring_time&#034;), r.getAs(&#034;risk_score&#034;), r.getAs(&#034;ph&#034;), r.getAs(&#034;dissolved_oxygen&#034;), r.getAs(&#034;permanganate&#034;), r.getAs(&#034;ammonia_nitrogen&#034;), r.getAs(&#034;total_phosphorus&#034;)));<br \/>\n}<br \/>\nDataset&lt;Row&gt; highRiskDf &#061; spark.createDataFrame(outputRows, StructType.fromDDL(&#034;point STRING, time STRING, score INT, ph DOUBLE, do DOUBLE, permanganate DOUBLE, ammonia DOUBLE, phosphorus DOUBLE&#034;));<br \/>\nhighRiskDf.write().mode(&#034;overwrite&#034;).option(&#034;header&#034;, true).csv(&#034;hdfs:\/\/localhost:9000\/output\/high_risk_points&#034;);<br \/>\nspark.stop();<\/p>\n<h2>\u4e94\u3001\u7cfb\u7edf\u89c6\u9891<\/h2>\n<p>\u57fa\u4e8e\u5927\u6570\u636e\u7684\u6c34\u8d28\u591a\u6307\u6807\u5173\u8054\u5206\u6790\u4e0e\u53ef\u89c6\u5316\u7684\u8bbe\u8ba1\u4e0e\u5b9e\u73b0\u9879\u76ee\u89c6\u9891&#xff1a; \u6f14\u793a\u89c6\u9891<\/p>\n<h2>\u7ed3\u8bed<\/h2>\n<p>\u6700\u65b0\u5927\u6570\u636e\u6bd5\u4e1a\u8bbe\u8ba1\u9009\u9898\u63a8\u8350-\u57fa\u4e8e\u5927\u6570\u636e\u7684\u6c34\u8d28\u591a\u6307\u6807\u5173\u8054\u5206\u6790\u4e0e\u53ef\u89c6\u5316\u7684\u8bbe\u8ba1\u4e0e\u5b9e\u73b0-\u5927\u6570\u636e-Spark-Hadoop-Bigdata \u60f3\u770b\u5176\u4ed6\u7c7b\u578b\u7684\u8ba1\u7b97\u673a\u6bd5\u4e1a\u8bbe\u8ba1\u4f5c\u54c1\u4e5f\u53ef\u4ee5\u548c\u6211\u8bf4<sub>\u90fd\u6709<\/sub> \u8c22\u8c22\u5927\u5bb6&#xff01; \u6709\u6280\u672f\u8fd9\u4e00\u5757\u95ee\u9898\u5927\u5bb6\u53ef\u4ee5\u8bc4\u8bba\u533a\u4ea4\u6d41\u6216\u8005\u79c1\u6211~ \u5927\u5bb6\u53ef\u4ee5\u5e2e\u5fd9\u70b9\u8d5e\u3001\u6536\u85cf\u3001\u5173\u6ce8\u3001\u8bc4\u8bba\u5566&#xff5e; <font color=\"#fe2c24\">\u6e90\u7801\u83b7\u53d6&#xff1a;\u2b07\u2b07\u2b07<\/font><\/p>\n<p><font color=\"#fe2c24\">\u7cbe\u5f69\u4e13\u680f\u63a8\u8350\u2b07\u2b07\u2b07 Java\u9879\u76ee Python\u9879\u76ee \u5b89\u5353\u9879\u76ee \u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u9879\u76ee<\/font><\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u2728\u4f5c\u8005\u4e3b\u9875&#xff1a;IT\u7814\u7a76\u5ba4\u2728 \u4e2a\u4eba\u7b80\u4ecb&#xff1a;\u66fe\u4ece\u4e8b\u8ba1\u7b97\u673a\u4e13\u4e1a\u57f9\u8bad\u6559\u5b66&#xff0c;\u64c5\u957fJava\u3001Python\u3001\u5fae\u4fe1\u5c0f\u7a0b\u5e8f\u3001Golang\u3001\u5b89\u5353Android\u7b49\u9879\u76ee\u5b9e\u6218\u3002\u63a5\u9879\u76ee\u5b9a\u5236\u5f00\u53d1\u3001\u4ee3\u7801\u8bb2\u89e3\u3001\u7b54\u8fa9\u6559\u5b66\u3001\u6587\u6863\u7f16\u5199\u3001\u964d\u91cd\u7b49\u3002 \u2611\u6587\u672b\u83b7\u53d6\u6e90\u7801\u2611 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