基于maven整合SSM
项目目录结构
maven配置文件：
创建数据库 创建user表以mysql为例
CREATE TABLEuser( id INTEGER PRIMARY KEY AUTO_INCREMENT, name CHAR(20) NOT NULL, passwordCHAR(40) NOT NULL) ENGINE= InnoDB AUTO_INCREMENT =16 DEFAULT CHARSET = utf8;
添加user数据
INSERT INTO user (id,name, password) VALUES(1,'A','AAA');
INSERT INTO user (id,name, password) VALUES(2,'B','BBB');
配置mybatis文件 >>>> mybatis-config.xml
PUBLIC "-//mybatis.org//DTD Config 3.0//EN"
"http://mybatis.org/dtd/mybatis-3-config.dtd">
db.url=jdbc:mysql://localhost:3306/ssm?characterEncoding=UTF-8
db.user=root
db.password=
db.maxActive=10
db.initialSize=2
db.minIdle=2
db.maxWait=60000
db.timeBetweenEvictionRunsMillis=3000
db.minEvictableIdleTimeMillis=300000
db.validationQuery=SELECT 'x' FROM DUAL
db.testWhileIdle=true
db.testOnBorrow=false
db.testOnReturn=false
Spring配置文件application.xml >>> 添加了spring-mybatis.xml
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd">
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans.xsd
http://www.springframework.org/schema/tx
http://www.springframework.org/schema/tx/spring-tx.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context.xsd">
SpringMVC配置文件spring-mvc.xml
xmlns:context="http://www.springframework.org/schema/context"
xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans.xsd http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd http://www.springframework.org/schema/context http://www.springframework.org/schema/context/spring-context.xsd">
#将ibatis log4j运行级别调到DEBUG可以在控制台打印出ibatis运行的sql语句
log4j.rootLogger=debug,stdout,logfile
### 把日志信息输出到控制台 ###
log4j.appender.stdout=org.apache.log4j.ConsoleAppender
#log4j.appender.stdout.Target=System.err
log4j.appender.stdout.layout=org.apache.log4j.SimpleLayout
### 把日志信息输出到文件：jbit.log ###
log4j.appender.logfile=org.apache.log4j.FileAppender
log4j.appender.logfile.File=D:/test.log
log4j.appender.logfile.layout=org.apache.log4j.PatternLayout
log4j.appender.logfile.layout.ConversionPattern=%d{yyyy-MM-dd HH:mm:ss} %F %p %m%n
###显示SQL语句部分
log4j.logger.com.ibatis=DEBUG
log4j.logger.com.ibatis.common.jdbc.SimpleDataSource=DEBUG
log4j.logger.com.ibatis.common.jdbc.ScriptRunner=DEBUG
log4j.logger.com.ibatis.sqlmap.engine.impl.SqlMapClientDelegate=DEBUG
log4j.logger.java.sql.Connection=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.PreparedStatement=DEBUG
MyBatis Generator配置文件generatorConfig.xml >>> 自动生成mybatis所需要的文件
PUBLIC "-//mybatis.org//DTD MyBatis Generator Configuration 1.0//EN"
"http://mybatis.org/dtd/mybatis-generator-config_1_0.dtd">
userId="root"
password="">
xsi:schemaLocation="http://xmlns.jcp.org/xml/ns/javaee http://xmlns.jcp.org/xml/ns/javaee/web-app_3_1.xsd"
version="3.1">
com.demo.bean下的User.java和UserExample.java
这两个类是由MBG生成的
com.demo.dao下的UserMapper.java
也由MBG生成的com.demo.service下的UserService.java接口
package com.demo.service;import java.util.List;
import com.demo.bean.User;
public interface UserService {
void insertUser(User user);
void deleteUser(int id);
User findUserById(Integer id);
List
void updateUser(User user);
}
import java.util.List;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;
import com.demo.bean.User;
import com.demo.bean.UserExample;
import com.demo.dao.UserMapper;
import com.demo.service.UserService;
@Service
public class UserServiceImpl implements UserService {
@Autowired
private UserMapper userMapper;
public void insertUser(User user) {
userMapper.insert(user);
}
public void deleteUser(int id) {
UserExample userExample = new UserExample();
userExample.createCriteria().andIdEqualTo(id);
userMapper.deleteByExample(userExample);
}
public User findUserById(Integer id) {
return userMapper.selectByPrimaryKey(id);
}
public List
return userMapper.selectByExample(null);
}
public void updateUser(User user) {
userMapper.updateByPrimaryKey(user);
}
}
com.demo.controller下的UserController.java
MVC模式下的控制器，通过注入的UserService完成相关业务
package com.demo.controller;import java.util.List;
import org.apache.log4j.LogManager;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.PathVariable;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.bind.annotation.ResponseBody;
import com.demo.bean.User;
import com.demo.service.UserService;
import com.github.pagehelper.PageHelper;
import com.github.pagehelper.PageInfo;
@Controller
@RequestMapping(value = "/user")
public class UserController {
private static Logger logger = LogManager.getLogger(User.class);
@Autowired
private UserService userService;
@RequestMapping(value = "/{id}", method = RequestMethod.GET)
@ResponseBody
public User findUserById(@PathVariable("id") Integer id) {
User user = userService.findUserById(id);
logger.info(user.toString());
return user;
}
@RequestMapping(value = "/list", method = RequestMethod.GET)
@ResponseBody
public List
PageHelper.startPage(1, 10);
List
PageInfo
System.out.println("++++++++++++++++++++++++++++++++++++++++++++++");
System.out.println(pageInfo);
return list;
}
}