1.1通過HttpServletResponse的API直接輸出（不需要配置渲染器）

controller類的主要代碼
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@Controller
public class RequestController{
 @RequestMapping("/resp")
    public void handleRequest(HttpServletRequest req, HttpServletResponse resp) throws Exception {

         resp.getWriter().println("hello HttpServletResponse");

    }

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web.xml配置

<?xml version="1.0" encoding="UTF-8"?>
<web-app xmlns="http://xmlns./xml/ns/javaee"
         xmlns:xsi="http://www./2001/XMLSchema-instance"
         xsi:schemaLocation="http://xmlns./xml/ns/javaee http://xmlns./xml/ns/javaee/web-app_3_1.xsd"
         version="3.1">

    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>/</url-pattern>
    </servlet-mapping>
</web-app>
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dispatcher-servlet.xml主要代碼

<beans xmlns="http://www./schema/beans"
       xmlns:context="http://www./schema/context"
       xmlns:xsi="http://www./2001/XMLSchema-instance"
       xsi:schemaLocation="
        http://www./schema/beans
        http://www./schema/beans/spring-beans-3.0.xsd
        http://www./schema/context
        http://www./schema/context/spring-context-3.0.xsd">

    <!--作用是掃描指定包下所有的包含注解的類-->
    <context:component-scan base-package="com.jsu.mvc"/>

</beans>
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1.2 使用HttpServletResponse 重定向到另一個(gè)視圖(其他不變 )

    @RequestMapping("/resp")
    public void handleRequest(HttpServletRequest req, HttpServletResponse resp) throws Exception {

        resp.sendRedirect("index.jsp");

    }
}
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1.3 使用HttpServletRequest 轉(zhuǎn)發(fā)（默認(rèn)訪問/下的index.jsp頁面 不受渲染器的影響）

@RequestMapping("/resp")
    public void handleRequest(HttpServletRequest req, HttpServletResponse resp) throws Exception {
        req.setAttribute("message","it's forword ");
        req.getRequestDispatcher("index.jsp").forward(req,resp);
        }
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1.4直接返回jsp頁面的名稱（無渲染器）

其他的配置不變

  @RequestMapping("/nice")
    public String hello1(){
        //轉(zhuǎn)發(fā)方式1
        return "home.jsp";
        //轉(zhuǎn)發(fā)方式2
        return "forward:index.jsp";
        //重定向方式
        return "redirect:index.jsp";
    }
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1.5當(dāng)有渲染器指定

 @RequestMapping("/nice")
    public String hello1(){
        //轉(zhuǎn)發(fā)方式1
        return "home";
        //轉(zhuǎn)發(fā)方式2
        return "forward:index";
        //重定向方式  hello指的是requsrmapping
        return "redirect:hello";
    }
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2 使用view

2.1 使用modelandview

需要視圖解析器 能指定跳轉(zhuǎn)頁面
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public class HelloController implements Controller {


    @Override
    public ModelAndView handleRequest(javax.servlet.http.HttpServletRequest httpServletRequest,
                                      javax.servlet.http.HttpServletResponse httpServletResponse) throws Exception {

        ModelAndView mv = new ModelAndView();
        //封裝要顯示到視圖的數(shù)據(jù)
        mv.addObject("msg","hello myfirst mvc");
        //視圖名
        mv.setViewName("hello");
        return mv;

    }
}
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[servlet-name]-servlet.xml

<!--配置渲染器-->
    <!--配置hellocontroller中頁面的位置-->

    <bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter" />
    <bean id="viewResolver"
                     class="org.springframework.web.servlet.view.UrlBasedViewResolver">
    <property name="viewClass" value="org.springframework.web.servlet.view.JstlView"/>
    <!--結(jié)果視圖的前綴-->
    <property name="prefix" value="/WEB-INF/jsp/"/>
    <!--結(jié)果視圖的后綴-->
    <property name="suffix" value=".jsp"/>
</bean>
    <bean name="/hello.do" class="com.jsu.mvc.HelloController"></bean>
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2.2 使用modelview

不需要視圖解析器 不能指定跳轉(zhuǎn)頁面

  //通過modelmap方式
    @RequestMapping("/modelmap")
    public String modelHello(String name,ModelMap map){
        map.addAttribute("name",name);
        System.out.println(name);

        return "index.jsp";
    }
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結(jié)語