初学ssm框架的信息

ssm框架，就是Spring ,SpringMVC ,mybstis 的简称，我们是从mybstis 开始学起的，mybatis的作用作为一个连接数据库的框架，可以很好配置连接好数据库，有mybatis,我们对数据库增删改查的操作更为简便了。SSM框架，我们用MAVEN工具对他们进行管理，maven 工具的主要作用就是为我们的工程自动配置好我们所需的架包，是通过POM.xml 文件进行依赖管理的。

ssm02这个工程使用maven工具进行管理和配置的，他的主要作用是实现用户的登陆和注册！以及对学生信息的管理，当然其中包括了增删改查的四个基本的操作，详细的具体的过程直接看后面的代码！

1 首先是POM.xml 文件的配置，他的作用主要是添加依懒的关系和自动下载相关的包。


  xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/maven-v4_0_0.xsd">
  4.0.0
  com.zzty
  ssm01
  war
  0.0.1-SNAPSHOT
  ssm01 Maven Webapp
  http://maven.apache.org
   
         
        4.0.2.RELEASE 
         
        3.1.1 
         
        1.7.7 
        1.2.17 
     
   
     
         
            junit 
            junit 
            4.11 
             
            test 
         
         
         
            org.springframework 
            spring-core 
            ${spring.version} 
         
   
         
            org.springframework 
            spring-web 
            ${spring.version} 
         
         
            org.springframework 
            spring-oxm 
            ${spring.version} 
         
         
            org.springframework 
            spring-tx 
            ${spring.version} 
         
   
         
            org.springframework 
            spring-jdbc 
            ${spring.version} 
         
   
         
            org.springframework 
            spring-webmvc 
            ${spring.version} 
         
         
            org.springframework 
            spring-aop 
            ${spring.version} 
         
   
         
            org.springframework 
            spring-context-support 
            ${spring.version} 
         
   
         
            org.springframework 
            spring-test 
            ${spring.version} 
         
         
         
            org.mybatis 
            mybatis 
            ${mybatis.version} 
         
         
         
            org.mybatis 
            mybatis-spring 
            1.1.0 
         
         
         
            javax 
            javaee-api 
            7.0 
         
         
         
            mysql 
            mysql-connector-java 
            5.1.30 
         
         
         
            commons-dbcp 
            commons-dbcp 
            1.2.2 
         
         
         
            jstl 
            jstl 
            1.2 
         
         
         
         
            log4j 
            log4j 
            ${log4j.version} 
         
           
           
         
         
            com.alibaba 
            fastjson 
            1.1.41 
         
   
   
         
            org.slf4j 
            slf4j-api 
            ${slf4j.version} 
         
   
         
            org.slf4j 
            slf4j-log4j12 
            ${slf4j.version} 
         
         
         
         
            org.codehaus.jackson 
            jackson-mapper-asl 
            1.9.13 
         
         
         
            commons-fileupload 
            commons-fileupload 
            1.3.1 
         
         
            commons-io 
            commons-io 
            2.4 
         
         
            commons-codec 
            commons-codec 
            1.9 
         
           
           
    
  
    ssm01

2 、配置resource下面的四个文件。

3、首先对resource下的jdbc.properties进行配置 ,作用就是连接你的数据库的配置

driver=com.mysql.jdbc.Driver
url=jdbc:mysql://localhost:3306/ssm01
username=root
password=root
#定义初始连接数
initialSize=0
#定义最大连接数
maxActive=20
#定义最大空闲
maxIdle=20
#定义最小空闲
minIdle=1
#定义最长等待时间
maxWait=60000

4、接着是log4.properties的配置，它的作用是用来记录运行时产生的信息。

#定义LOG输出级别
log4j.rootLogger=INFO,Console,File
#定义日志输出目的地为控制台
log4j.appender.Console=org.apache.log4j.ConsoleAppender
log4j.appender.Console.Target=System.out
#可以灵活地指定日志输出格式，下面一行是指定具体的格式
log4j.appender.Console.layout = org.apache.log4j.PatternLayout
log4j.appender.Console.layout.ConversionPattern=[%c] - %m%n
 
#文件大小到达指定尺寸的时候产生一个新的文件
log4j.appender.File = org.apache.log4j.RollingFileAppender
#指定输出目录
log4j.appender.File.File = logs/ssm.log
#定义文件最大大小
log4j.appender.File.MaxFileSize = 10MB
# 输出所以日志，如果换成DEBUG表示输出DEBUG以上级别日志
log4j.appender.File.Threshold = ALL
log4j.appender.File.layout = org.apache.log4j.PatternLayout
log4j.appender.File.layout.ConversionPattern =[%p] [%d{yyyy-MM-dd HH\:mm\:ss}][%c]%m%n

5、接着是spring mvc .xml的配置。

<?xml version="1.0" encoding="UTF-8"?>

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
                        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd 
                        http://www.springframework.org/schema/context 
                        http://www.springframework.org/schema/context/spring-context-3.1.xsd 
                        http://www.springframework.org/schema/mvc 
                        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
    
    package="zizai.controller" />
    
    class="org.springframework.http.converter.json.MappingJacksonHttpMessageConverter">
        
            
                text/html;charset=UTF-8
            
        
    
    
    <bean
        class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        
            
                 
            
        
    
    
    class="org.springframework.web.servlet.view.InternalResourceViewResolver">
           
        
        
    
     
    
    class="org.springframework.web.multipart.commons.CommonsMultipartResolver">

6、spring mybatis.xml 他的作用就是整合Spring 和Mybatis。

<?xml version="1.0" encoding="UTF-8"?>

    xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xmlns:p="http://www.springframework.org/schema/p"
    xmlns:context="http://www.springframework.org/schema/context"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
                        http://www.springframework.org/schema/beans/spring-beans-3.1.xsd 
                        http://www.springframework.org/schema/context 
                        http://www.springframework.org/schema/context/spring-context-3.1.xsd 
                        http://www.springframework.org/schema/mvc 
                        http://www.springframework.org/schema/mvc/spring-mvc-4.0.xsd">
    
    package="zizai.*" />
    
    class="org.springframework.beans.factory.config.PropertyPlaceholderConfigurer">
        
    
 
    class="org.apache.commons.dbcp.BasicDataSource"
        destroy-method="close">
        
        
        
        
        
        
        
        
        
        
        
        
        
        
    
 
    
    class="org.mybatis.spring.SqlSessionFactoryBean">
        
        
        
    
 
    
    class="org.mybatis.spring.mapper.MapperScannerConfigurer">
        
        
    
 
    
    class="org.springframework.jdbc.datasource.DataSourceTransactionManager">

7、还有的就是webapp 下面的WEB-INF下面的web.xml 的配置了

<?xml version="1.0" encoding="UTF-8"?>

    xmlns="http://java.sun.com/xml/ns/javaee"
    xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"
    version="3.0">
    Archetype Created Web Application
    
    
        contextConfigLocation
        classpath:spring-mybatis.xml
    
    
    
        encodingFilter
        class>org.springframework.web.filter.CharacterEncodingFilterclass>
        true
        
            encoding
            UTF-8
        
    
    
        encodingFilter
        /*
    
    
    
        org.springframework.web.context.ContextLoaderListener
    
    
    
        org.springframework.web.util.IntrospectorCleanupListener
    
     
        default
        /resources/*
    
     
 
    
    
        SpringMVC
        org.springframework.web.servlet.DispatcherServlet
        
            contextConfigLocation
            classpath:spring-mvc.xml
        
        1
        true
    
    
        SpringMVC
        
        /
    
    
        /index.jsp
    
    
    
        15

8、我们现在要写的就是Controller层，Service接口层，ServiceImp接口的实现层！就一个列子为例来说明的吧！这个UserController层，主要是实现用户的登陆和注册以及修改用户的密码。

package zizai.controller;

import javax.annotation.Resource;
import javax.servlet.http.HttpServletRequest;

import org.springframework.stereotype.Controller;
import org.springframework.ui.Model;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

import zizai.model.User;
import zizai.service.StudentService;
import zizai.service.UserService;

@Controller  
@RequestMapping("/user") 
public class UserController {
    @Resource
    private UserService userService;
    @Resource
    private StudentService studentService;
     @RequestMapping("/showUser")  
        public String showUser(HttpServletRequest request,Model model){  
            int userId = Integer.parseInt(request.getParameter("id"));  
            User user = this.userService.getUserById(userId);  
            model.addAttribute("user", user);  
            return "showUser";  
} 
     @RequestMapping("/table")  
     public ModelAndView showTable(HttpServletRequest request){  
     ModelAndView view = new ModelAndView("tables");
        return view; 
           
} 
     @RequestMapping("/index")  
        public ModelAndView toIndex(HttpServletRequest request){  
         ModelAndView view = new ModelAndView("login");
        return view;
} 
     @RequestMapping("/login2")  
     public ModelAndView login(HttpServletRequest request,Model model){
         String  username = request.getParameter("name");
         String pwd = request.getParameter("pwd");
         User user = this.userService.getUserByName(username);
         String url="login";
         if(user!=null&&pwd.equals(user.getPwd())){
             url="sucess";
         }else{
             url="fail";
         }
         ModelAndView view = new ModelAndView(url);
         return view;
     } 
     @RequestMapping("/register")  
     public ModelAndView register(HttpServletRequest request,Model model){     
         String  username = request.getParameter("name");
         String pwd = request.getParameter("pwd");
         User user = new User(); 
         user.setName(username);
         user.setPwd(pwd);
         int i=this.userService.addUser(user);
         String url="register";
         if(username!=null||pwd!=null){        
         if(i>0){
             url="login";
         }else{
             url="fail";
         }                 
        }
         ModelAndView view = new ModelAndView(url);
        return view;
     } 
    
     @RequestMapping("/updateUserPwd")  
        public String updateUserPwd(HttpServletRequest request,Model model){
        String name=request.getParameter("name");
        String pwd=request.getParameter("pwd");
        String pwd1=request.getParameter("pwd1");
        if(pwd1.equals(pwd)&&pwd1!=null){        
        User user=new User();
        user.setPwd(pwd);
        user.setName(name);
        int i=this.userService.updateUserPwdByName(user);        
        return "success";
        }
        else{
            return "fail2";
        }
         }
     @RequestMapping("/getUserByName")  
     public ModelAndView selectByName(HttpServletRequest request,Model model){
        String name = request.getParameter("name");
        User user=new User();
        user=this.userService.getUserByName(name);
        String url="getUserByName";
        if(name!=null){
            url="updateUserPwd";
        }        
        ModelAndView view = new ModelAndView();
        view.setViewName(url);
        view.addObject("xxx", user);
        
        return view;
     }
    

}

useService 接口层

package zizai.service;

import zizai.model.User;

public interface UserService {
    public User getUserById(int id);
    public User getUserByName(String name);
    public int addUser(User user);
    public int updateUserPwdByName(User user);
    
}

UserServiceImp 实现层

package zizai.serviceImp;

import javax.annotation.Resource;

import org.springframework.stereotype.Service;

import zizai.dao.UserMapper;
import zizai.model.User;
import zizai.service.UserService;

@Service("userService")
public class UserServiceImp implements UserService {
    @Resource
    private UserMapper userMapper;
    
    public User getUserById(int id) {
        // TODO Auto-generated method stub
        return userMapper.selectByPrimaryKey(id);
    }

    public int addUser(User user) {
        // TODO Auto-generated method stub
        return userMapper.insert(user);
    }

    public User getUserByName(String name) {
        // TODO Auto-generated method stub
        return userMapper.selectByName(name);
    }
    public int updateUserPwdByName(User user) {
        // TODO Auto-generated method stub
        return userMapper.updateUserPwdByName(user);
    }

}

model(USer model)层

package zizai.model;
 
public class User {
    private Integer id;
 
    private String name;
 
    private String pwd;
 
    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 == null ? null : name.trim();
    }
 
    public String getPwd() {
        return pwd;
    }
 
    public void setPwd(String pwd) {
        this.pwd = pwd == null ? null : pwd.trim();
    }
}

mapping (USer mapping)

<?xml version="1.0" encoding="UTF-8" ?>


  
    
    
    
  
  
    id, name, pwd
  
  
  
   
  
    delete from suser
    where id = #{id,jdbcType=INTEGER}
  
  
    insert into suser (id, name, pwd
      )
    values (#{id,jdbcType=INTEGER}, #{name,jdbcType=VARCHAR}, #{pwd,jdbcType=VARCHAR}
      )
  
   
   
  
    insert into suser
    
      <if test="id != null" >
        id,
      if>
      <if test="name != null" >
        name,
      if>
      <if test="pwd != null" >
        pwd,
      if>
    
    
      <if test="id != null" >
        #{id,jdbcType=INTEGER},
      if>
      <if test="name != null" >
        #{name,jdbcType=VARCHAR},
      if>
      <if test="pwd != null" >
        #{pwd,jdbcType=VARCHAR},
      if>
    
  
  
    update suser
    
      <if test="name != null" >
        name = #{name,jdbcType=VARCHAR},
      if>
      <if test="pwd != null" >
        pwd = #{pwd,jdbcType=VARCHAR},
      if>
    
    where id = #{id,jdbcType=INTEGER}
  
  
    update suser
    set name = #{name,jdbcType=VARCHAR},
      pwd = #{pwd,jdbcType=VARCHAR}
    where id = #{id,jdbcType=INTEGER}
  
  
  update suser
    set pwd = #{pwd,jdbcType=VARCHAR}
    where name = #{name,jdbcType=VARCHAR}

dao (user Dao)

package zizai.dao;
 
import zizai.model.User;
 
public interface UserMapper {
    int deleteByPrimaryKey(Integer id);
 
    int insert(User record);
 
    int insertSelective(User record);
 
    User selectByName(String name);
 
    User selectByPrimaryKey(Integer id);
 
    int updateByPrimaryKeySelective(User record);
 
    int updateByPrimaryKey(User record);
     
    int updateUserPwdByName(User user);
     
}

最后就是剩下WEB-INF 目录下的jsp文件夹下面的jsp 文件了。

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%> 
 
 
   
    登录 
   
    欢迎来到自在天原的登陆页面
   
  
  
   用户名:
    


        密码:

<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>  
  
  
    
    注册  
    
    
    
  
  
     &nbsp;  
    用户名：

    密码：

JAVA代码分享 SSM

初学ssm框架的信息

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