java jdbc使用SSH隧道连接mysql数据库demo

java jdbc使用SSH隧道连接mysql数据库demo

 

本文链接：https://blog.csdn.net/earbao/article/details/50216999

1.  
   package com.yws.echo_socket;
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3.  
    
4.  
   import com.jcraft.jsch.JSch;
5.  
   import com.jcraft.jsch.Session;
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   import java.sql.*;
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   //http://my.oschina.net/Thinkeryjgfn/blog/177283
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    //http://www.cnblogs.com/I-will-be-different/p/3925351.html?utm_source=tuicool&utm_medium=referral
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    //java jdbc使用SSH隧道连接mysql数据库demo
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    public class ChangeDB {
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    public static void go() {
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    try {
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    JSch jsch = new JSch();
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    Session session = jsch.getSession("yunshouhu", "192.168.0.102", 22);
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    session.setPassword("xxxx");
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    session.setConfig("StrictHostKeyChecking", "no");
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    session.connect();
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    System.out.println(session.getServerVersion());//这里打印SSH服务器版本信息
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    //ssh -L 192.168.0.102:5555:192.168.0.101:3306 yunshouhu@192.168.0.102 正向代理
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    int assinged_port = session.setPortForwardingL("192.168.0.101",5555, "192.168.0.101", 3306);//端口映射 转发
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    System.out.println("localhost:" + assinged_port);
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    //ssh -R 192.168.0.102:5555:192.168.0.101:3306 yunshouhu@192.168.0.102
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    //session.setPortForwardingR("192.168.0.102",5555, "192.168.0.101", 3306);
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    // System.out.println("localhost: -> ");
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    } catch (Exception e) {
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    e.printStackTrace();
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    }
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    }
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    public static void main(String[] args) {
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    try {
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    //1、加载驱动
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    Class.forName("com.mysql.jdbc.Driver");
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    } catch (ClassNotFoundException e) {
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    e.printStackTrace();
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    }
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    //2、创建连接
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    Connection conn = null;
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    Connection conn2 = null;
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    try {
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    conn2 = DriverManager.getConnection("jdbc:mysql://localhost:3306/mysql", "hadoop", "xxxx");
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    getData(conn2);
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    } catch (SQLException e) {
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    System.out.println("未连接上数据库");
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    e.printStackTrace();
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    }
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61.  
    try{
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    System.out.println("=============");
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    go();
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    conn = DriverManager.getConnection("jdbc:mysql://192.168.0.101:5555/mysql", "hadoop", "xxx");
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    getData(conn);
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    } catch (SQLException e) {
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    e.printStackTrace();
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    }
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    }
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    private static void getData(Connection conn) throws SQLException {
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    // 获取所有表名
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    Statement statement = conn.createStatement();
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    ResultSet resultSet = statement
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    .executeQuery("select * from help_keyword");
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    // 获取列名
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    ResultSetMetaData metaData = resultSet.getMetaData();
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    for (int i = 0; i < metaData.getColumnCount(); i++) {
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    // resultSet数据下标从1开始
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    String columnName = metaData.getColumnName(i + 1);
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    int type = metaData.getColumnType(i + 1);
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    if (Types.INTEGER == type) {
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    // int
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    } else if (Types.VARCHAR == type) {
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    // String
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    }
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    System.out.print(columnName + "\t");
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    }
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    System.out.println();
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    // 获取数据
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    while (resultSet.next()) {
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    for (int i = 0; i < metaData.getColumnCount(); i++) {
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    // resultSet数据下标从1开始
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     System.out.print(resultSet.getString(i + 1) + "\t");
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     }
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     System.out.println();
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     }
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     statement.close();
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     conn.close();
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     }
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     }

1.  
   <?xml version="1.0" encoding="UTF-8"?>
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   <project xmlns="http://maven.apache.org/POM/4.0.0"
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   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
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   xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
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   <parent>
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   <artifactId>grpc-demo</artifactId>
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   <groupId>org.jiepu</groupId>
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   <version>1.0</version>
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   </parent>
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    <modelVersion>4.0.0</modelVersion>
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12.  
    <artifactId>echo_socket</artifactId>
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    <properties>
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    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
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    <java.version>1.6</java.version>
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    </properties>
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    <dependencies>
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21.  
    <dependency>
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    <groupId>com.jcraft</groupId>
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    <artifactId>jsch</artifactId>
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    <version>0.1.53</version>
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    </dependency>
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    <dependency>
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    <groupId>mysql</groupId>
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    <artifactId>mysql-connector-java</artifactId>
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    <version>5.1.36</version>
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    </dependency>
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    </dependencies>
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    <build>
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    <plugins>
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    <plugin>
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    <groupId>org.apache.maven.plugins</groupId>
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    <artifactId>maven-compiler-plugin</artifactId>
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    <configuration>
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    <source>${java.version}</source>
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    <target>${java.version}</target>
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    </configuration>
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    </plugin>
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    <plugin>
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    <groupId>org.apache.maven.plugins</groupId>
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    <artifactId>maven-shade-plugin</artifactId>
46.  
    <executions>
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    <execution>
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    <phase>package</phase>
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    <goals>
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    <goal>shade</goal>
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    </goals>
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    <configuration>
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    <transformers>
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    <transformer implementation="org.apache.maven.plugins.shade.resource.ManifestResourceTransformer">
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    <mainClass>com.yws.echo_socket.ChangeDB</mainClass>
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    </transformer>
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    </transformers>
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    </configuration>
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    </execution>
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    </executions>
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    </plugin>
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    </plugins>
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    </build>
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    </project>

65.