首页 > 代码库 > 孔浩Spring mvc 笔记
孔浩Spring mvc 笔记
Spring mvc 配置：
Web.xml:
<?xml version="1.0"encoding="UTF-8"?>
<web-appxmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"xmlns="http://java.sun.com/xml/ns/javaee"xmlns:web="http://java.sun.com/xml/ns/javaee/web-app_2_5.xsd" xsi:schemaLocation="http://java.sun.com/xml/ns/javaeehttp://java.sun.com/xml/ns/javaee/web-app_2_5.xsd"id="WebApp_ID" version="2.5">
<servlet>
<servlet-name>hello</servlet-name>
<servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
<load-on-startup>1</load-on-startup>
</servlet>
<servlet-mapping>
<servlet-name>hello</servlet-name>
<url-pattern>/</url-pattern>
</servlet-mapping>
<filter>
<filter-name>CharacterFilter</filter-name>
<filter-class>org.springframework.web.filter.CharacterEncodingFilter</filter-class>
<init-param>
<param-name>encoding</param-name>
<param-value>UTF-8</param-value>
</init-param>
</filter>
<filter-mapping>
<filter-name>CharacterFilter</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
</web-app>Hello-servlet.xml
(名称必须与web.xm文件中的servlet-name相同，放到web-inf下)
<?xml version="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/mvchttp://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
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-3.1.xsd">
<context:component-scanbase-package="zttc.itat.controller"/>
<mvc:annotation-driven/>
<!--将静态文件指定到某个特殊的文件夹中统一处理 -->
<mvc:resourceslocation="/resources/" mapping="/resources/**"/>
<beanname="/welcome.html"class="zttc.itat.controller.WelcomeController"></bean>
<beanclass="org.springframework.web.servlet.view.InternalResourceViewResolver">
<propertyname="viewClass"value=http://www.mamicode.com/"org.springframework.web.servlet.view.JstlView"/>>UserController .java
@Controller
@RequestMapping("/user")
public class UserController {
private Map<String, User> users = new HashMap<String, User>();
public UserController() {
users.put("sdy",new User("sdy","123","宋冬野","sdy@qq.com"));
users.put("ldh",new User("ldh","123","刘德华","ldh@qq.com"));
users.put("gfc",new User("gfc","123","郭富城","gfc@qq.com"));
users.put("lm",new User("lm","123","黎明","lm@qq.com"));
users.put("zxy",new User("zxy","123","张学友","zxy@qq.com"));
}
//列表页面
@RequestMapping(value = http://www.mamicode.com/"/users",method = RequestMethod.GET)> Rest风格
/user_show?id=120
/user/120
/user_delete?id=123
/user/123/delete
/user_updateInput?id=123
/user/123/update
/user_list
/users
/user/users
REST的风格不等于使用了REST技术
GET，POST，PUT，DELETE
topic/23/delete
使用hibernate+spring+springmvc完整的实现一个用户管理系统
dao-->service-->controller
增加分页，增加sitemesh
/**
* 局部异常处理,仅仅只能处理这个控制器中的异常
*/
@ExceptionHandler(value=http://www.mamicode.com/{UserException.class})><!-- 将静态文件指定到某个特殊的文件夹中统一处理-->
<mvc:resourceslocation="/resources/" mapping="/resources/**"/>
Spring mvc 文文件上传
1,UserController.java
//在具体添加用户时，是post请求，就访问以下代码
@RequestMapping(value=http://www.mamicode.com/"/add",method=RequestMethod.POST)>2,Hello-servlet.xml
<!-- 设置multipartResolver才能完成文件上传-->
<bean id="multipartResolver"class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
<propertyname="maxUploadSize" value=http://www.mamicode.com/"5000000">>3,jsp
<!-- 此时没有写action,直接提交会提交给/add-->
<sf:form method="post"modelAttribute="user" enctype="multipart/form-data">
Username:<sf:inputpath="username"/><sf:errorspath="username"/><br/>
Password:<sf:passwordpath="password"/><sf:errorspath="password"/><br/>
Nickname:<sf:inputpath="nickname"/><br/>
Email:<sf:inputpath="email"/><sf:errors path="email"/><br/>
Attach:<inputtype="file" name="attachs"/><br/> <input type="file"name="attachs"/><br/> <inputtype="file" name="attachs"/><br/>
<inputtype="submit" value=http://www.mamicode.com/"添加用户"/>> Sitemesh:
步骤：
1， 定义相应的模板文件（main.jsp）
2， 编写装饰器文件，说明哪些页面要引入模板
decorators.xml:
<?xmlversion="1.0" encoding="UTF-8"?>
<decoratorsdefaultdir="/WEB-INF/decorators">
<!-- Any urls that are excluded willnever be decorated by Sitemesh -->
<excludes>
<pattern>/exclude.jsp</pattern>
<pattern>/exclude/*</pattern>
</excludes>
<decorator name="main"page="main.jsp">
<pattern>/*</pattern>
</decorator>
</decorators>3， 在web.xml中开启sitemesh的过滤器
<filter>
<filter-name>sitemesh</filter-name>
<filter-class>com.opensymphony.sitemesh.webapp.SiteMeshFilter</filter-class>
</filter>
<filter-mapping>
<filter-name>sitemesh</filter-name>
<url-pattern>/*</url-pattern>
</filter-mapping>
Spring mvc总结：
1,在xml中配置DispatcherServlet
2,在web-inf下配置：xxx-servlet.xml
3,异常处理分局部异常处理(handlerException方法)，和全局异常处理（配置xxx-servlet：SimpleMappingExceptionResolver）
异常处理(handlerException方法示例：
/**
* 局部异常处理,仅仅只能处理这个控制器中的异常
*/
@ExceptionHandler(value=http://www.mamicode.com/{UserException.class})> 4,页面传值到Controller可以用方法的参数直接接收，或者用@PathVariable接收：
@RequestMapping(value = http://www.mamicode.com/"/{id}",method = RequestMethod.GET)>5,从Controller传值到页面可以从方法参数注入session,request,或者用Model,ModelMap
6,上传文件可以直接在方法参数中加：
@RequestParam("attach")MultipartFile //上传一个文件，file input的名称为attach
@RequestParam("attachs")MultipartFile[] //上传一组文件，file input的名称都为attachsSpring mvc上传文件示例：
@RequestMapping(value=http://www.mamicode.com/"/add",method=RequestMethod.POST)>
7,spring mvc方法返回json对象示例：导入json包：jackson-all-1.9.4.jar
@RequestMapping(value=http://www.mamicode.com/"/{username}",method=RequestMethod.GET,params="json")>
孔浩Spring mvc 笔记
声明：以上内容来自用户投稿及互联网公开渠道收集整理发布，本网站不拥有所有权，未作人工编辑处理，也不承担相关法律责任，若内容有误或涉及侵权可进行投诉： 投诉/举报 工作人员会在5个工作日内联系你，一经查实，本站将立刻删除涉嫌侵权内容。