ssm框架整合+pageHelper--实现了简单的增删改查与分页
转载请标明出处：
https://blog.csdn.net/weixin_41965979/article/details/80926877
本文出自付付讶的博客
首先附上maven项目架构图（代码中标红的全部是要换成自己项目里相对应的名字）
1：在pom里写上ssm整合需要的jar包
UTF-8
1.8
1.8
4.3.14.RELEASE
3.4.1
org.springframework
spring-context
${spring.version}
org.springframework
spring-core
${spring.version}
org.springframework
spring-beans
${spring.version}
org.springframework
spring-web
${spring.version}
org.springframework
spring-webmvc
${spring.version}
org.springframework
spring-aop
${spring.version}
org.springframework
spring-jdbc
${spring.version}
org.springframework
spring-tx
${spring.version}
org.springframework
spring-expression
${spring.version}
org.aspectj
aspectjweaver
1.8.6
org.mybatis
mybatis
${mybatis.version}
org.mybatis
mybatis-spring
1.3.1
com.alibaba
druid
1.1.5
com.alibaba
fastjson
1.1.41
mysql
mysql-connector-java
6.0.6
org.slf4j
slf4j-api
1.7.7
org.slf4j
slf4j-log4j12
1.7.7
commons-dbcp
commons-dbcp
1.2.2
commons-fileupload
commons-fileupload
1.3.1
commons-io
commons-io
2.4
commons-codec
commons-codec
1.9
org.apache.commons
commons-lang3
3.3.2
org.apache.poi
poi
3.14
com.github.pagehelper
pagehelper
5.1.1
org.codehaus.jackson
jackson-mapper-asl
1.9.13
javax
javaee-api
7.0
jstl
jstl
1.2
javax.servlet
javax.servlet-api
3.1.0
provided
javax.servlet
jstl
1.2
log4j
log4j
1.2.17
junit
junit
4.11
test
2：配置web.xml
contextConfigLocation
classpath*:spring/applicationContext.xml
log4jConfigLocation
classpath:log4j.properties
org.springframework.web.context.request.RequestContextListener
org.springframework.web.context.ContextLoaderListener
org.springframework.web.util.IntrospectorCleanupListener
org.springframework.web.util.Log4jConfigListener
dispatcherServlet
org.springframework.web.servlet.DispatcherServlet
contextConfigLocation
classpath*:spring/spring-mvc.xml
1
dispatcherServlet
/
DruidWebStatFilter
com.alibaba.druid.support.http.WebStatFilter
exclusions
*.js,*.gif,*.jpg,*.png,*.css,*.ico,/druid/*
DruidWebStatFilter
/*
encodingFilter
org.springframework.web.filter.CharacterEncodingFilter
encoding
UTF-8
forceEncoding
true
encodingFilter
/*
/index.jsp
3：配置spring-mvc.xml
4：配置与mybatis整合，名字自取我这里叫（applicationContext.xml）
注意：数据库连接池的value一定要与jdbc.properties一样
5：数据库连接配置：jdbc.properties（park为数据库名称）
#mysql
db.Type=mysql
db.driverClassName=com.mysql.jdbc.Driver
db.url=jdbc:mysql://localhost:3306/park?useUnicode=true&characterEncoding=UTF-8&useSSL=false&serverTimezone=GMT
db.username=fu
db.password=1234566：日志配置：log4j.properties
log4j.rootLogger=DEBUG,console,file
#-----------------------------------#
#1 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
log4j.appender.console.Threshold=DEBUG
####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 ###
#%c: 输出日志信息所属的类目，通常就是所在类的全名
#%m: 输出代码中指定的消息,产生的日志具体信息
#%n: 输出一个回车换行符，Windows平台为"/r/n"，Unix平台为"/n"输出日志信息换行
log4j.appender.console.layout = org.apache.log4j.PatternLayout
log4j.appender.console.layout.ConversionPattern=[%c]-%m%n
#-----------------------------------#
#2 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
#日志文件输出目录
log4j.appender.file.File=log/tibet.log
#定义文件最大大小
log4j.appender.file.MaxFileSize=10mb
###输出日志信息###
#最低级别
log4j.appender.file.Threshold=ERROR
log4j.appender.file.layout=org.apache.log4j.PatternLayout
log4j.appender.file.layout.ConversionPattern=[%p][%d{yy-MM-dd}][%c]%m%n
#4 mybatis 显示SQL语句部分
log4j.logger.org.mybatis=DEBUG
#log4j.logger.cn.tibet.cas.dao=DEBUG
#log4j.logger.org.mybatis.common.jdbc.SimpleDataSource=DEBUG#
#log4j.logger.org.mybatis.common.jdbc.ScriptRunner=DEBUG#
#log4j.logger.org.mybatis.sqlmap.engine.impl.SqlMapClientDelegate=DEBUG#
#log4j.logger.java.sql.Connection=DEBUG
log4j.logger.java.sql=DEBUG
log4j.logger.java.sql.Statement=DEBUG
log4j.logger.java.sql.ResultSet=DEBUG
log4j.logger.java.sql.PreparedStatement=DEBUG7:配置mybatis的映射资源文件mybatis-config.xml
8:配置结束了，接下来看方法和实体
userEntity
public class UserEntity {
private int id;
private String userName;
private String age;
@Override
public String toString() {
return "User [id=" + id + ", age=" + age + ", userName=" + userName
+ "]";
}
public UserEntity(){
super();
}
public int getId() {
return id;
}
public void setId(int id) {
this.id = id;
}
public String getAge() {
return age;
}
public void setAge(String age) {
this.age = age;
}
public String getUserName() {
return userName;
}
public void setUserName(String userName) {
this.userName = userName;
}
public UserEntity(int id, String age, String userName) {
super();
this.id = id;
this.age = age;
this.userName = userName;
} UserService
@Service
public class UserService{
@Autowired
private UserDao userDao;
public void save(UserEntity user){
userDao.insert(user);
}
public boolean edit(UserEntity user){
return userDao.edit(user);
}
public boolean deleteUser(int id){
return userDao.deleteUser(id);
}
public UserEntity findById(int id){
return userDao.findById(id);
}
public List findAll(){
return userDao.findAll();
}
} userDao
@Repository
public interface UserDao{
int insert(UserEntity user);
boolean edit(UserEntity user);
boolean deleteUser(int id);
UserEntity findById(int id);
List findAll();
} userDao.xml类（如果dao.xml与dao在同一层包目录下则applicationContext.xml里不用配置自动扫描mapping.xml文件）
!--
namespace：必须与对应的接口全类名一致 UserMapper.java
id ：必须与对应接口的某个对应的方法名一致即必须要和UserMapper.java接口中的方法同名。
-->
insert into t_user(userName,age) values(#{userName},#{age})
update t_user set userName=#{userName},age=#{age} where id=#{id}
delete from t_user where id=#{id}
@Controller
@RequestMapping("/user")
public class UserController {
@Autowired
private UserService userService;
/**
* 获取所有用户列表
* @param request
* @return
*/
@RequestMapping("/getAllUser")
public String getAllUser(@RequestParam(required = false, defaultValue = "1") Integer page,
HttpServletRequest request, Model model){
PageHelper.startPage(page,2);
List user = userService.findAll();
PageInfo p = new PageInfo(user);
model.addAttribute("page",p);
model.addAttribute("userList", user);
request.setAttribute("userList", user);
return "test/allUser";
}
/**
* 跳转到添加用户界面
* @param
* @return
*/
@RequestMapping("/toAddUser")
public String toAddUser(){
return "test/addUser";
}
/**
* 添加用户并重定向
* @param user
* @param
* @return
*/
@RequestMapping("/addUser")
public String addUser(UserEntity user){
userService.save(user);
return "redirect:/user/getAllUser";
}
/**
*编辑用户
* @param user
* @param request
* @return
*/
@RequestMapping("/updateUser")
public String updateUser(UserEntity user, HttpServletRequest request, Model model){
if(userService.edit(user)){
user = userService.findById(user.getId());
request.setAttribute("user", user);
model.addAttribute("user", user);
return "redirect:/user/getAllUser";
}else{
return "/error";
}
}
/**
* 根据id查询单个用户
* @param id
* @param request
* @return
*/
@RequestMapping("/getUser")
public String getUser(int id,HttpServletRequest request,Model model){
request.setAttribute("user", userService.findById(id));
model.addAttribute("user", userService.findById(id));
return "test/editUser";
}
/**
* 删除用户
* @param id
* @param
* @param
*/
@RequestMapping("/delUser")
public String delUser(int id){
userService.deleteUser(id);
return "redirect:/user/getAllUser";
}
} 9：方法结束了，接下来看页面（index.jsp）
<%@ page language="java" import="java.util.*" pageEncoding="utf-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme() + "://"
+ request.getServerName() + ":" + request.getServerPort()
+ path + "/";
%>
首页
进入用户管理页
allUser.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
用户列表
添加用户
姓名
年龄
操作
${user.userName }
${user.age }
编辑
删除
每页${page.pageSize}条 当前页${page.size}条 ${page.pageNum}/${page.pages}页 总条数${page.total}
首页
首页
上一页
上一页
下一页
下一页
末页
末页
addUser.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
添加用户
添加用户
editUser.jsp
<%@ page language="java" import="java.util.*" pageEncoding="UTF-8"%>
<%
String path = request.getContextPath();
String basePath = request.getScheme()+"://"+request.getServerName()+":"+request.getServerPort()+path+"/";
%>
<%@ taglib uri="http://java.sun.com/jsp/jstl/core" prefix="c"%>
编辑用户
添加用户
接下来效果图
项目就到这结束了，有问题可以留言，项目源码点击打开链接