springmvc笔记（一）

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MVC的思想是业务数据抽取同业务数据呈现分离。

View是视图层，重点关注数据的呈现。

Model 模型层，业务数据的信息表示，关注支撑业务信息的构成，通常是多个业务实体的组合。

Controller 控制层，调用业务逻辑产生合适的数据。同时传递数据给视图层用于呈现。

Springmvc提供了线程的实现，调用即可。

DispatcherServelet是前端控制器

HandlerAdapter相当于controller,DispatcherServelet调用各种HandlerAdapter来实现任务分发给相关的业务逻辑

HandlerInterceptor是一个接口，可以用来在Handler调用之前，之后，以及view呈现后可以做很多事情

HandlerMapping是负责确定DispatcherServelet与controller之间映射的类，告诉DispatcherServelet，在请求到来后，由哪个controller来响应这个请求

Springmvc+hibernate+spring数据绑定笔记

（1）首先配置好jar包，放到lib下边。（注意：导出文件的时候类库是没有导出来的，因此建议把jar包添加好）。

（1）写好配置文件。

springmvc-servlet.xml

<?xmlversion="1.0"encoding="UTF-8"?>

<beansxmlns="http://www.springframework.org/schema/beans"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xmlns:context="http://www.springframework.org/schema/context"

xmlns:mvc="http://www.springframework.org/schema/mvc"

xsi:schemaLocation="http://www.springframework.org/schema/beanshttp://www.springframework.org/schema/beans/spring-beans.xsd

http://www.springframework.org/schema/contexthttp://www.springframework.org/schema/context/spring-context-4.1.xsd

http://www.springframework.org/schema/mvchttp://www.springframework.org/schema/mvc/spring-mvc-4.1.xsd">

<context:annotation-config/>

<context:component-scanbase-package="com.hmy.ssh.controller"/>

<mvc:default-servlet-handler/>

<context:component-scanbase-package="com.hmy.ssh.service"></context:component-scan>

<context:component-scanbase-package="com.hmy.ssh.dao"></context:component-scan>

<context:component-scanbase-package="com.hmy.ssh.bean"></context:component-scan>

<!-- 不处理这个cONTRoller

<context:exclude-filter type="annotation"expression="org.springframework.Controller"/>

-->

<mvc:annotation-driven/>

<beanclass="org.springframework.web.servlet.view.InternalResourceViewResolver"

id="internalResourceViewResolver">

<propertyname="prefix"value="/"/>

<propertyname="suffix"value=".jsp"/>

</bean>

<!-- 可能这个标签的真谛就是为了引用资源的访问不会类似CONTROLLER一样被拦截，区分出关注的资源的访问，

一般我们在springMVC里面的拦截都会配置为"/"，拦截所有的。 -->

<mvc:resourceslocation="/images/"mapping="/images/**"/>

<mvc:resourceslocation="/js/"mapping="/js/**"/>

<mvc:resourceslocation="/css/"mapping="/css/**"/>

<mvc:resourceslocation="/data/"mapping="/data/**"/>

<mvc:annotation-driven>

<mvc:message-converters>

<beanclass="org.springframework.http.converter.StringHttpMessageConverter">

<constructor-argvalue="UTF-8"/>

</bean>

</mvc:message-converters>

</mvc:annotation-driven>

<beanid="multipartResolver"

class="org.springframework.web.multipart.commons.CommonsMultipartResolver">

<propertyname="maxUploadSize"value="6291456"/>

</bean>

</beans>

<!--

<mvc:interceptors>

</mvc:interceptors> -->

（2）写好web配置，添加以下代码：

<?xmlversion="1.0"encoding="UTF-8"?>

<web-appversion="2.5"

xmlns="http://java.sun.com/xml/ns/javaee"

xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"

xsi:schemaLocation="http://java.sun.com/xml/ns/javaee

http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd">

<welcome-file-list>

<welcome-file>index.jsp</welcome-file>

</welcome-file-list>

<servlet-name>springmvc</servlet-name>

<!---必须添加这行才会生效-> <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>

<init-param>

<param-name>contextConfigLocation</param-name>

<param-value>classpath:springmvc-servlet.xml</param-value>

</init-param>

</servlet>

<servlet-mapping>

<servlet-name>springmvc</servlet-name>

<url-pattern>/</url-pattern>

</servlet-mapping>

</web-app>

（3）写好hibernate，以及实体类Users.

package com.hmy.ssh.bean;

import java.util.HashSet;

import java.util.Set;

/**

* User entity.@author MyEclipse Persistence Tools

public class User implements java.io.Serializable {

// Fields

privateString userName;

privateInteger userid;

privateString userPwd;

privateString userEmail;

privateString userPhone;

privateString userType;

privateString trueName;

privateInteger authority;

privateSet homeWorks = new HashSet(0);

privateSet comments = new HashSet(0);

privateSet statisticses = new HashSet(0);

//Constructors

/**default constructor */

publicUser() {

}

/**minimal constructor */

publicUser(String userName, String userPwd, String userEmail,

StringuserPhone, String trueName) {

this.userName= userName;

this.userPwd= userPwd;

this.userEmail= userEmail;

this.userPhone= userPhone;

this.trueName= trueName;

}

/** fullconstructor */

publicUser(String userName, Integer userid, String userPwd,

StringuserEmail, String userPhone, String userType,

StringtrueName, Integer authority, Set homeWorks, Set comments,

Setstatisticses) {

this.userName= userName;

this.userid= userid;

this.userPwd= userPwd;

this.userEmail= userEmail;

this.userPhone= userPhone;

this.userType= userType;

this.trueName= trueName;

this.authority= authority;

this.homeWorks= homeWorks;

this.comments= comments;

this.statisticses= statisticses;

}

//Property accessors

publicString getUserName() {

returnthis.userName;

}

publicvoid setUserName(String userName) {

this.userName= userName;

}

publicInteger getUserid() {

returnthis.userid;

}

publicvoid setUserid(Integer userid) {

this.userid= userid;

}

publicString getUserPwd() {

returnthis.userPwd;

}

publicvoid setUserPwd(String userPwd) {

this.userPwd= userPwd;

}

publicString getUserEmail() {

returnthis.userEmail;

}

publicvoid setUserEmail(String userEmail) {

this.userEmail= userEmail;

}

publicString getUserPhone() {

returnthis.userPhone;

}

publicvoid setUserPhone(String userPhone) {

this.userPhone= userPhone;

}

publicString getUserType() {

returnthis.userType;

}

publicvoid setUserType(String userType) {

this.userType= userType;

}

publicString getTrueName() {

returnthis.trueName;

}

publicvoid setTrueName(String trueName) {

this.trueName= trueName;

}

publicInteger getAuthority() {

returnthis.authority;

}

publicvoid setAuthority(Integer authority) {

this.authority= authority;

}

public SetgetHomeWorks() {

returnthis.homeWorks;

}

publicvoid setHomeWorks(Set homeWorks) {

this.homeWorks= homeWorks;

}

public SetgetComments() {

returnthis.comments;

}

publicvoid setComments(Set comments) {

this.comments= comments;

}

public SetgetStatisticses() {

returnthis.statisticses;

}

publicvoid setStatisticses(Set statisticses) {

this.statisticses= statisticses;

}

@Override

publicString toString() {

return"User [authority=" + authority + ", comments=" + comments

+", homeWorks=" + homeWorks + ", statisticses=" +statisticses

+", trueName=" + trueName + ", userEmail=" + userEmail

+", userName=" + userName + ", userPhone=" + userPhone

+ ", userPwd=" +userPwd + ", userType=" + userType

+", userid=" + userid + "]";

}

（4）写好dao层和业务逻辑层，此处省去一部分。

（5）写好controller层，并调用业务逻辑层的方法查询

package com.hmy.ssh.controller;

import java.util.ArrayList;

import java.util.List;

import org.springframework.beans.factory.annotation.Autowired;

importorg.springframework.stereotype.Controller;

importorg.springframework.web.bind.annotation.ModelAttribute;

importorg.springframework.web.bind.annotation.RequestMapping;

importorg.springframework.web.bind.annotation.RequestParam;

importorg.springframework.web.bind.annotation.ResponseBody;

import com.hmy.ssh.bean.User;

importcom.hmy.ssh.controller.UserForm.UserListForm;

import com.hmy.ssh.dao.daoImpl.*;

import com.hmy.ssh.service.UserService;

importcom.hmy.ssh.service.serviceImpl.UserServiceImpl;

@Controller

public class UserController {

@Autowired

privateUserService userService;

//------------查询模块-----------------

//http://localhost:8888/CourseOnline/selectOneUseByAuthority?authority=1 ，更改用户权限

@ResponseBody

@RequestMapping("/selectOneUseByAuthority")

public List<User>selectOneUseByAuthority(@RequestParam("authority") String authority){

//1.根据权限，查询正在考试的用户

System.out.println("权限:"+authority);

Integerauthority1=Integer.parseInt(authority);

List<User>user=userService.selectOneUseByAuthority(authority1);

System.out.println(user);

returnuser;//单个用户的信息

}

@ResponseBody

//这里是返回给前端json,必须导入jason的jar包

@RequestMapping("/test")

//测试类

public String test(){

//UserService userService1 = new UserServiceImpl();

List<User>userList = userService.selectUsers();

System.out.println(userList.size());

return "success";

}

运行成功。打开网址

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