SpringBoot工程通过jdbc连接Hive

首先确定当前hive的版本

例如：我目前的版本就是hive-common-1.1.0-cdh5.16.2.jar

 注意：引入的Hive-jdbc依赖需与Hive版本保持一致。

依次对应hive-common-1.1.0引入的Hive-jdbc版本为1.1.0(其中排除log4j依赖是为了解决原工程引入Hive依赖后导致日志不输出问题)

        
            org.apache.hive
            hive-jdbc
　　　　　　　1.1.0　
            
                
                    org.eclipse.jetty.aggregate
                    *
                
                
                    org.apache.logging.log4j
                    log4j-slf4j-impl
                
                
                    org.slf4j
                    slf4j-log4j12
                
                
                    org.apache.log4j
                    org.apache.hive.org.apache.log4j
                
                
                    log4j
                    log4j
                
            
        

关引入Hive-jdbc1.1.0再去尝试连接同样会发生报错

报错信息如下

java.lang.NoClassDefFoundError: org/apache/hadoop/conf/Configuration

    at org.apache.hive.jdbc.HiveConnection.createBinaryTransport(HiveConnection.java:393)
    at org.apache.hive.jdbc.HiveConnection.openTransport(HiveConnection.java:187)
    at org.apache.hive.jdbc.HiveConnection.(HiveConnection.java:163)
    at org.apache.hive.jdbc.HiveDriver.connect(HiveDriver.java:105)
    at java.sql.DriverManager.getConnection(DriverManager.java:664)
    at java.sql.DriverManager.getConnection(DriverManager.java:247)
    at com.hundsun.duqa.admin.api.service.DuqaHiveJDBCTest.test2(DuqaHiveJDBCTest.java:42)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
    at java.lang.reflect.Method.invoke(Method.java:498)
    at org.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
    at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
    at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
    at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
    at org.springframework.test.context.junit4.statements.RunBeforeTestMethodCallbacks.evaluate(RunBeforeTestMethodCallbacks.java:75)
    at org.springframework.test.context.junit4.statements.RunAfterTestMethodCallbacks.evaluate(RunAfterTestMethodCallbacks.java:86)
    at org.springframework.test.context.junit4.statements.SpringRepeat.evaluate(SpringRepeat.java:84)
    at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:252)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.runChild(SpringJUnit4ClassRunner.java:94)
    at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
    at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
    at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
    at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
    at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
    at org.springframework.test.context.junit4.statements.RunBeforeTestClassCallbacks.evaluate(RunBeforeTestClassCallbacks.java:61)
    at org.springframework.test.context.junit4.statements.RunAfterTestClassCallbacks.evaluate(RunAfterTestClassCallbacks.java:70)
    at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
    at org.springframework.test.context.junit4.SpringJUnit4ClassRunner.run(SpringJUnit4ClassRunner.java:191)
    at org.junit.runner.JUnitCore.run(JUnitCore.java:137)
    at com.intellij.junit4.JUnit4IdeaTestRunner.startRunnerWithArgs(JUnit4IdeaTestRunner.java:68)
    at com.intellij.rt.junit.IdeaTestRunner$Repeater.startRunnerWithArgs(IdeaTestRunner.java:33)
    at com.intellij.rt.junit.JUnitStarter.prepareStreamsAndStart(JUnitStarter.java:230)
    at com.intellij.rt.junit.JUnitStarter.main(JUnitStarter.java:58)
Caused by: java.lang.ClassNotFoundException: org.apache.hadoop.conf.Configuration
    at java.net.URLClassLoader.findClass(URLClassLoader.java:382)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:418)
    at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:355)
    at java.lang.ClassLoader.loadClass(ClassLoader.java:351)
    ... 35 more

产生错误的原因是我们需要同样引入Hadoop-common包，这里我选择的是2.6.5

注意这里可能会产生另一个报错！！！

 Unable to initialize 'javax.el.ExpressionFactory'. Check that you have the EL dependencies on the classpath, or use ParameterMessageInterpolator instead

需要排除hadoop依赖jsp-api,如下

        
            org.apache.hadoop
            hadoop-common
            2.6.5
            
　　　　　　　　　 
　　　　　　　　　　　　javax.servlet.jsp
　　　　　　　　　　　　jsp-api
　　　　　　　　　　
                
                    servlet-api
                    javax.servlet
                
                
                    org.apache.logging.log4j
                    log4j-slf4j-impl
                
                
                    org.slf4j
                    slf4j-log4j12
                
                
                    org.apache.log4j
                    org.apache.hive.org.apache.log4j
                
                
                    log4j
                    log4j
                
            
        

再去测试我们的Demo，成功了！

Demo代码如下：

public void test2() throws Exception{
        // 注册数据库驱动，用的hive的jdbc，驱动名固定写死
        Class.forName("org.apache.hive.jdbc.HiveDriver");
        // 如果用的是hive2服务，则写jdbc:hive2，后面跟上hive服务器的ip以及端口号，端口号默认是10000
        Connection conn = DriverManager.getConnection("jdbc:hive2://1服务器IP:10000/库名", "用户名", "密码");
        Statement stat = conn.createStatement();
        ResultSet rs = stat.executeQuery("select api_id from idc.ods_duas_data_services_mng where thedate =  '20220424' and api_id regexp 'companyInfo'");
        while (rs.next()) {
            String api_id = rs.getString("api_id");
            System.out.println(api_id);
        }
        stat.close();
        conn.close();
    }

完美解决SpringBoot通过jdbc连接Hive问题！