用Spring+jdbc 写一个数据库增删改查

用Spring+Jdbc写一个数据库增删改查

先展示项目结构

ClassBiz.java

package com.gxj.biz;

import java.util.List;

import com.gxj.model.Clazz;

public interface ClassBiz {

    public boolean InsertClass(Clazz clazz);

    public boolean DeleteClass(Integer id);

    public boolean UpdateClass(Clazz clazz);

    public List SelectClass();

}

ClassBizimplement.java

package com.gxj.biz;

import java.util.List;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;

import com.gxj.dao.ClassDao;
import com.gxj.model.Clazz;
@Service("classbiz")
public class ClassBizimplement implements ClassBiz {
    @Resource
    private ClassDao  dao;

    @Override
    public boolean InsertClass(Clazz clazz) {
        // TODO Auto-generated method stub

        boolean flag = false;

        int res = dao.InsertClass(clazz);

        if(res>0) {

            flag = true;

        }

        return flag;
    }

    @Override
    public boolean DeleteClass(Integer id) {
        // TODO Auto-generated method stub

        boolean flag = false;

        int res = dao.DeleteClass(id);

        if(res>0) {

            flag = true;

        }

        return flag;
    }

    @Override
    public boolean UpdateClass(Clazz clazz) {
        // TODO Auto-generated method stub

        boolean flag = false;

        int res = dao.UpdateClass(clazz);

        if(res>0) {

            flag = true;

        }

        return flag;
    }

    @Override
    public List SelectClass() {
        // TODO Auto-generated method stub

        List list = dao.SelectClass();

        return list;
    }

}

ClassDao.java

package com.gxj.dao;

import java.util.List;

import com.gxj.model.Clazz;

public interface ClassDao {

    public int InsertClass(Clazz clazz);

    public int DeleteClass(Integer id);

    public int UpdateClass(Clazz clazz);

    public List SelectClass();

}

ClassDaoimplement.java

package com.gxj.dao;


import java.util.List;

import javax.annotation.Resource;

import org.springframework.jdbc.core.JdbcTemplate;
import org.springframework.stereotype.Repository;

import com.gxj.model.ClassRowMapper;
import com.gxj.model.Clazz;

@Repository
public class ClassDaoimplement implements ClassDao {

    @Resource
    private JdbcTemplate jt;

    @Override
    public int InsertClass(Clazz clazz) {
        // TODO Auto-generated method stub

        String sql = "insert into class(name,size) value(?,?)";

        int res = jt.update(sql,new Object[] {clazz.getName(),clazz.getSize()});

        return res;
    }

    @Override
    public int DeleteClass(Integer id) {
        // TODO Auto-generated method stub

        String sql = "delete from class where id=?";

        int res = jt.update(sql,new Object[] {id});

        return res;
    }

    @Override
    public int UpdateClass(Clazz clazz) {
        // TODO Auto-generated method stub

        String sql = "update class set name=?,size=? where id=?";

        int res = jt.update(sql, new Object[] {clazz.getName(),clazz.getSize(),clazz.getId()});

        return res;
    }

    @Override
    public List SelectClass() {
        // TODO Auto-generated method stub

        String sql = "select * from class";

        List list = jt.query(sql,new ClassRowMapper());

        return list;
    }

}

DeleteClass.java

package com.gxj.main;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.gxj.biz.ClassBiz;

public class DeleteClass {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("spring.xml");

        ClassBiz biz = (ClassBiz) context.getBean("classbiz");

        boolean flag = biz.DeleteClass(21);

        System.out.println(flag);

    }

}

InsertClass.java

package com.gxj.main;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.gxj.biz.ClassBiz;
import com.gxj.model.Clazz;

public class InsertClass {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("spring.xml");

        ClassBiz biz = (ClassBiz) context.getBean("classbiz");

        Clazz clazz = new Clazz();

        clazz.setName("ts17061");

        clazz.setSize(20);

        boolean flag = biz.InsertClass(clazz);

        System.out.println(flag);

    }

}

SelectClass.java

package com.gxj.main;

import java.util.List;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.gxj.biz.ClassBiz;
import com.gxj.model.Clazz;

public class SelectClass {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("spring.xml");

        ClassBiz biz = (ClassBiz) context.getBean("classbiz");

        List list = biz.SelectClass();

        for(Clazz p:list) {

            System.out.println(p.getId());

            System.out.println(p.getName());

            System.out.println(p.getSize());

        }

    }

}

UpdateClass.java

package com.gxj.main;

import org.springframework.context.support.ClassPathXmlApplicationContext;

import com.gxj.biz.ClassBiz;
import com.gxj.model.Clazz;

public class UpdateClass {

    public static void main(String[] args) {
        // TODO Auto-generated method stub

        ClassPathXmlApplicationContext context = new ClassPathXmlApplicationContext("spring.xml");

        ClassBiz biz = (ClassBiz) context.getBean("classbiz");

        Clazz clazz = new Clazz();

        clazz.setId(20);

        clazz.setName("ts17066");

        clazz.setSize(55);

        boolean flag = biz.UpdateClass(clazz);

        System.out.println(flag);

    }

}

ClassRowMapper.java

package com.gxj.model;

import java.sql.ResultSet;
import java.sql.SQLException;

import org.springframework.jdbc.core.RowMapper;

public class ClassRowMapper implements RowMapper {

    @Override
    public Clazz mapRow(ResultSet arg0, int arg1) throws SQLException {
        // TODO Auto-generated method stub

        Clazz clazz = new  Clazz();

        clazz.setId(arg0.getInt(1));

        clazz.setName(arg0.getString(2));

        clazz.setSize(arg0.getInt(3));

        return clazz;

    }

}

Clazz.java

package com.gxj.model;

public class Clazz {

    private Integer id;

    private String name;

    private Integer size;

    public Integer getId() {
        return id;
    }

    public void setId(Integer id) {
        this.id = id;
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public Integer getSize() {
        return size;
    }

    public void setSize(Integer size) {
        this.size = size;
    }

}

spring.xml

   






     

            root//数据库的用户名

     

     

          123456//数据库的密码

     

     

             jdbc:mysql://localhost:3306/itcast//itcast是数据库名

     

     

          com.mysql.jdbc.Driver

     





    

         

    

pom.xml

  4.0.0
  com.gxj
  ts170607
  0.0.1-SNAPSHOT

  
        UTF-8
        5.0.6.RELEASE
        2.5.0
    

    

       

            commons-dbcp
            commons-dbcp
            1.4
        

        
            junit
            junit
            4.12
            test
        

        
    
        org.springframework
        spring-core
        ${spring.version}
    

    
        org.springframework
        spring-beans
        ${spring.version}
    

    
        org.springframework
        spring-context
        ${spring.version}
    

    
        org.springframework
        spring-tx
        ${spring.version}
    

    
        org.springframework
        spring-web
        5.0.6.RELEASE
    

    
        org.springframework
        spring-webmvc
        ${spring.version}
    


    
        org.springframework
        spring-jdbc
        ${spring.version}
    

    
        org.springframework
        spring-test
        ${spring.version}
        test
    

    
    
        org.mybatis
        mybatis
        3.2.8
    

    
    
        org.mybatis
        mybatis-spring
        1.2.2
    

    

    
        mysql
        mysql-connector-java
        5.1.6
    


    
    
        com.alibaba
        druid
        1.0.12
    

    
        org.aspectj
        aspectjweaver
        1.8.4
    

    
    
        log4j
        log4j
        1.2.17
    

    
    
        javax.servlet
        servlet-api
        3.0-alpha-1
        provided
    

    
        javax.servlet
        jstl
        1.2
    

    
    
        org.codehaus.jackson
        jackson-mapper-asl
        1.9.13
    

    
        com.alibaba
        fastjson
        1.2.3
    

    
        com.fasterxml.jackson.core
        jackson-annotations
        2.9.4
    

    
        com.fasterxml.jackson.core
        jackson-core
        2.9.4
    

    
        com.fasterxml.jackson.core
        jackson-databind
        2.9.4
    


    
    
        commons-io
        commons-io
        2.4
    

    
        commons-fileupload
        commons-fileupload
        1.2.2
    


   
    org.codehaus.jackson
                com.springsource.org.codehaus.jackson.mapper
1.4.3



org.codehaus.jackson
com.springsource.org.codehaus.jackson
1.4.3






  
  
      
        org.apache.maven.plugins  
        maven-compiler-plugin  
          
            1.8  
            1.8  
          
      
  
 

数据库资源需自己手动创建

到此Spring+jdbc的增删改查已经弄完