------------建一个javabean 类 WorkRecord 用于保存访问数据库记录的内容

public class WorkRecord

{

private long do_seq;

private String proc_name;

private String sql_desc;

private String work_status;

public void setdo_seq(long do_seq)

{

this.do_seq=do_seq;

}

public void setproc_name(String proc_name)

{

this.proc_name=proc_name;

}

public void setsql_desc(String sql_desc)

{

this.sql_desc=sql_desc;

}

public void setwork_status(String work_status)

{

this.work_status=work_status;

}

public long getDo_seq()

{

return do_seq;

}

public String getProc_name()

{

return proc_name;

}

public String  getSql_desc()

{

return sql_desc;

}

public String getWork_status()

{

return work_status;

}

public static void main (String[] args)

{

System.out.println("hello");

}

}

------------------------------建一个javabean类faq 用于访问数据库，并将访问的记录存于对象WorkRecord中，多个WorkRecord存于列表中

//java bean

//file name: faq.java

//package Test;

import java.util.ArrayList;

import java.util.List;

import net.sf.json.JSON;

import net.sf.json.JSONObject;

import net.sf.json.JSONSerializer;

//import WorkRecord;

import java.sql.*;

public class faq {

String sDBDriver = "sun.jdbc.odbc.JdbcOdbcDriver";

String sConnStr = "jdbc:odbc:wz";

Connection conn = null;

ResultSet rs = null;

JSON json;

public faq() {

try {

Class.forName(sDBDriver);

}catch(java.lang.ClassNotFoundException e) {

System.err.println("faq(): " + e.getMessage());

}

}

public  void executeQuery(String sql)

{

rs = null;

try {

conn = DriverManager.getConnection(sConnStr,"liuyz","liuyz1");

Statement stmt = conn.createStatement();

rs = stmt.executeQuery(sql);

//List result =new ArrayList();

List result = new ArrayList();

while (rs.next())

{

WorkRecord rec= new WorkRecord();

rec.setdo_seq(rs.getLong("do_seq"));

rec.setproc_name(rs.getString("proc_name"));

rec.setsql_desc(rs.getString("sql_desc"));

rec.setwork_status(rs.getString("work_status"));

result.add(rec);

}

//JSONObject json= JSONSerializer.toJSON(result);

json = JSONSerializer.toJSON(result);

}

catch(SQLException ex)

{

System.err.println("aq.executeQuery: " + ex.getMessage());

}

//return json.toString();

System.out.println(json.toString());

}

public static void main (String[] args)

{

faq aaa =new faq();

aaa.executeQuery("select * from work_log where do_seq=399252 or do_seq=399261 ");

}

}

1、在c:\下解压json支持库生成 org net 目录

2、在c:\下编写前面两个文件

3、javac WorkRecord.java ; javac faq.java

4、java faq 运行后返回以下json 格式的数据

[{"do_seq":399252,"proc_name":"LIUYZ.GET_GD\n","sql_desc":"delete from  busi_log

a where\nbusiness_id   in (500000020057,8000100108,500000020204,800015100004,80

0015100003,800015100002,800015100008,800015100005,800015100006,800015100000,8000

100100,8000100126,500000020055,500000020053,8000000015,8000000012,800015101178,5

00000021011,800015101251,500000021012,500000020222,500000020223,500000020038,500

000020093,500000020094,360,500000020064,500000020339,500000020079,500000020009,5

00000020006,2100000003,8000100103,500000020028,500000020007,500000020012,5000000

20221,500000020220,500000020073,500000020074,8000000620,500000020320,50000002020

3,900000030001,500000020076,500000020077,8000000021,8100000987,500000020008,5000

00020096,2100000004,8000000002,8000000005)","work_status":"finished"},{"do_seq":

399261,"proc_name":"LIUYZ.GET_GD\n","sql_desc":"delete from  yz_gd where  fee_de

tail like '%终端差价%'","work_status":"finished"}]

注：

//List result =new ArrayList();

List result = new ArrayList();

编译正常

如改为

List result =new ArrayList();

// List result = new ArrayList();

编译出现下面信息

C:\>javac faq.java

注意：faq.java 使用了未经检查或不安全的操作。

注意：要了解详细信息，请使用 -Xlint:unchecked 重新编译。

但运行正常，仍能产生json格式的数据