JDBC反向代理框架(Smile)使用说明

Smile~

创建数据库

1 CREATE TABLE student (
2 sid int(11) NOT NULL AUTO_INCREMENT,
3 name varchar(255) DEFAULT NULL,
4 age int(11) DEFAULT NULL,
5 PRIMARY KEY (sid)
6 ) ENGINE=InnoDB AUTO_INCREMENT=3 DEFAULT CHARSET=utf8 COMMENT=‘学生表‘;
7
8
9 INSERT INTO student VALUES (1,‘花千骨‘,1462),(2,‘白子画‘,511);

StuService.java

 1 package com.dc.service;
 2
 3 import java.util.List;
 4 import java.util.Map;
 5
 6 import com.dc.entity.Student;
 7 import com.dc.jdbc.JDBCUtils;
 8
 9 public class StuService {
10     public int updateStuInfo(Map<String, Object> map) throws Exception{
11         int i = JDBCUtils.update("update student set age = age+1 where name=#{name}", map);
12         return i;
13     }
14     public List<Map<String,Object>> getStudentInfo() throws Exception{
15         List<Map<String,Object>> stuList = JDBCUtils.selectList("select * from student");
16         return stuList;
17     }
18     public List<Student> getStudentInfo2(Map<String,Object> map) throws Exception{
19         List<Student> stuList = JDBCUtils.selectList("select * from student where name=#{n}",map,Student.class);
20         return stuList;
21     }
22     public Student getOne(List<Object> condition) throws Exception{
23         Student stu = JDBCUtils.selectOne("select * from student where name=? and sid = ?", condition, Student.class);
24         return stu;
25     }
26 }

单独的main方法使用：

 1 package com.dc.test;
 2
 3 import java.util.ArrayList;
 4 import java.util.HashMap;
 5 import java.util.List;
 6 import java.util.Map;
 7
 8 import com.dc.entity.Student;
 9 import com.dc.jdbc.JDBCProxy;
10 import com.dc.service.StuService;
11
12 public class MyTest {
13     public static void main(String[] args){
14         StuService $stuService = new StuService();
15         JDBCProxy proxyStuService = JDBCProxy.getInstance();
16         proxyStuService.setTarget($stuService);
17         StuService stuService= (StuService)proxyStuService.getTarget();
18
19         try {
20             List<Map<String,Object>> stuList = stuService.getStudentInfo();
21             for (int i = 0; i < stuList.size(); i++) {
22                 System.out.println(stuList.get(i).get("name")+"的年龄="+stuList.get(i).get("age")+"岁");
23             }
24
25             Map<String,Object> map = new HashMap<String,Object>();
26             map.put("name", "白子画");
27             System.out.println("---------修改白子画的年龄加一岁---------------");
28             stuService.updateStuInfo(map);
29
30
31             List<Object> l = new ArrayList<Object>();
32             l.add("白子画");
33             l.add(2);
34             Student s = stuService.getOne(l);
35             System.out.println("被修改后白子画的年龄"+s.getAge());
36         } catch (Exception e) {
37             e.printStackTrace();
38         }
39     }
40 }

Spring配合使用

applicationContext.xml配置

<bean id="$stuService" class="com.dc.service.StuService"></bean>
<bean id="jdbcProxy" class="com.dc.jdbc.JDBCProxy">
　　<property name="target" ref="$stuService"></property>
</bean>
<bean id="stuServiceProxy" factory-bean="jdbcProxy" factory-method="getTarget" />

package com.dc.test;

import java.util.ArrayList;
import java.util.HashMap;
import java.util.List;
import java.util.Map;

import org.springframework.context.ApplicationContext;
import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.dc.entity.Student;
import com.dc.service.StuService;

public class BeanTest {
    public static void main(String[] args) {
        ApplicationContext ac = new ClassPathXmlApplicationContext("classpath:applicationContext.xml");
        StuService stuService = (StuService) ac.getBean("stuServiceProxy");
        try {
            List<Map<String,Object>> stuList = stuService.getStudentInfo();
            for (int i = 0; i < stuList.size(); i++) {
                System.out.println(stuList.get(i).get("name")+"的年龄="+stuList.get(i).get("age")+"岁");
            }

            Map<String,Object> map = new HashMap<String,Object>();
            map.put("name", "白子画");
            System.out.println("---------修改白子画的年龄加一岁---------------");
            stuService.updateStuInfo(map);

            List<Object> l = new ArrayList<Object>();
            l.add("白子画");
            l.add(2);
            Student s = stuService.getOne(l);
            System.out.println("被修改后白子画的年龄"+s.getAge());
        } catch (Exception e) {
            e.printStackTrace();
        }
    }
}