Question

我开始关注本教程http://docs.spring.io/docs/Spring-MVC-step-by-step/part1.html。

我创建了虚拟HelloController并在webapp-servlet.xml中定义了bean：

<bean name="/hello.htm" class="com.planner.HelloController"></bean>

但是当我尝试访问时 /planner/hello.htm 我明白了：

HTTP Status 500 - No adapter for handler [com.planner.HelloController@187cd18]: The DispatcherServlet configuration needs to include a HandlerAdapter that supports this handler

我在No adapter for handler exception找到了类似的问题。他们尝试将注释驱动的映射与BeanNameUrlHandlerMapping一起使用，并获得了类似的异常。解决方案是将SimpleControllerHandlerAdapter bean添加到spring上下文中，但在我的情况下它没有帮助（不应该是必要的，因为BeanNameUrlHandlerMapping应该是默认的映射，对吧？）。我还添加了BeanNameUrlHandlerMapping bean以防万一，但它仍然是相同的。

以下是我的配置：

规划器-servlet.xml中

<beans xmlns="http://www.springframework.org/schema/beans"
   xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
   xsi:schemaLocation="http://www.springframework.org/schema/beans
   http://www.springframework.org/schema/beans/spring-beans-2.5.xsd">

    <bean name="/hello.htm" class="com.planner.HelloController"></bean>

    <bean class="org.springframework.web.servlet.handler.BeanNameUrlHandlerMapping"/> 
<bean class="org.springframework.web.servlet.mvc.SimpleControllerHandlerAdapter"/>

</beans>

的web.xml

<web-app version="2.4"
     xmlns="http://java.sun.com/xml/ns/j2ee"
     xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
     xsi:schemaLocation="http://java.sun.com/xml/ns/j2ee 
     http://java.sun.com/xml/ns/j2ee/web-app_2_4.xsd" >

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

<servlet>
    <servlet-name>planner</servlet-name>
    <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
    <load-on-startup>1</load-on-startup>
</servlet>

<servlet-mapping>
    <servlet-name>planner</servlet-name>
    <url-pattern>*.htm</url-pattern>     
</servlet-mapping>

</web-app>

HelloController.java：

package com.planner;

import java.io.IOException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
import org.springframework.stereotype.Controller;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.servlet.ModelAndView;

public class HelloController {

    protected final Logger logger = LoggerFactory.getLogger(getClass());

    public ModelAndView handleRequest(HttpServletRequest request,
        HttpServletResponse response) throws ServletException, IOException {

        logger.info("Returning hello view");

        //default view resolver will just forward to this url
        return new ModelAndView("hello.jsp");
    }       
}

的pom.xml

<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">

<groupId>com.planner</groupId>
<artifactId>Planner</artifactId>
<version>0.0.1-SNAPSHOT</version>
<modelVersion>4.0.0</modelVersion>

<packaging>war</packaging>

<properties>
    <java.version>1.7</java.version>
    <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
    <project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
    <javax.annotation.version>1.0</javax.annotation.version>
    <spring-framework.version>3.2.3.RELEASE</spring-framework.version> 
    <!-- <spring-framework.version>3.0.0.RELEASE</spring-framework.version> -->
    <hibernate.version>4.2.1.Final</hibernate.version>
    <logback.version>1.0.13</logback.version>
    <slf4j.version>1.7.5</slf4j.version>
    <junit.version>4.10</junit.version>
    <javax.servlet.version>2.5</javax.servlet.version>      
</properties>

<dependencies>

    <!-- JSR-250 -->
    <dependency>
        <groupId>javax.annotation</groupId>
        <artifactId>jsr250-api</artifactId>
        <version>${javax.annotation.version}</version>
    </dependency>

    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-webmvc</artifactId>
        <version>${spring-framework.version}</version>
    </dependency> 

    <!-- Logging with SLF4J & LogBack -->
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-api</artifactId>
        <version>${slf4j.version}</version>
        <scope>compile</scope>
    </dependency>

    <!-- Test Artifacts -->
    <dependency>
        <groupId>org.springframework</groupId>
        <artifactId>spring-test</artifactId>
        <version>${spring-framework.version}</version>
        <scope>test</scope>
    </dependency>
    <dependency>
        <groupId>junit</groupId>
        <artifactId>junit</artifactId>
        <version>${junit.version}</version>
        <scope>test</scope>
    </dependency> 

    <dependency>
        <groupId>javax.servlet</groupId>
        <artifactId>servlet-api</artifactId>
        <version>${javax.servlet.version}</version>
        <scope>provided</scope>         
    </dependency> 

</dependencies>

请帮助:)我显然缺少一些东西：）

配置Spring MVC应用程序时“没有处理程序的适配器”

0 个答案: