SpringMVC填坑之旅-返回json数据

 

本文是自己开发中所遇到的问题,对一些及百度到的解决方案做一个记录。

DispatcherServlet配置文件

    <!-- 定义跳转的文件的前后缀 ,视图模式配置-->
    <bean id="viewResolver"
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <!-- 这里的配置我的理解是自动给后面action的方法return的字符串加上前缀和后缀,变成一个 可用的url地址 -->
        <property name="prefix" value="/WEB-INF/jsp/" />
        <property name="suffix" value=".jsp" />
    </bean>

每次返回数据都被拦截返回成jsp文件,在控制器的方法上添加@ResponseBody注解解决返回页面问题;

页面接收json数据报错:

The resource identified by this request is only capable of generating responses with characteristics not acceptable according to the request "accept" headers.

解析类型不正确(自己理解)

配置注解及添加jar包解决:

<!-- 启用spring mvc 注解 -->
    <context:annotation-config />  
    <mvc:annotation-driven >
        <mvc:message-converters register-defaults="true">
            <!-- Accept-Charset 大量打出问题 -->
            <!-- <bean class="com.panku.common.converter.UTF8StringHttpMessageConverter">
                <property name="writeAcceptCharset" value="false"></property>
            </bean> -->
            <!-- 将StringHttpMessageConverter的默认编码设为UTF-8 -->
            <bean class="org.springframework.http.converter.StringHttpMessageConverter">
                <constructor-arg value="UTF-8" />
                <property name="writeAcceptCharset" value="false"></property>
            </bean>
            <!-- 将Jackson2HttpMessageConverter的默认格式化输出为false -->
            <!-- <bean class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
                <property name="supportedMediaTypes">
                    <list><value>application/json;charset=UTF-8</value></list>
                </property>
                <property name="prettyPrint" value="false"/>
                <property name="objectMapper">  
                    <bean class="com.panku.common.utils.JsonMapper"></bean>  
                </property> 
            </bean> -->
            <!-- 支持国产使用fastjson进行转换json字符串 -->
            <bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
                <property name="supportedMediaTypes" value="text/html;charset=UTF-8"/>
                <property name="features">
                  <array>
                    <value>WriteMapNullValue</value>
                    <value>WriteNullStringAsEmpty</value>
                  </array>
                </property>
              </bean>
        </mvc:message-converters>
    </mvc:annotation-driven>

<!-- 提供无刷新返回json -->
    <bean
        class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        <property name="messageConverters">
            <list>
                <ref bean="mappingJacksonHttpMessageConverter" />
            </list>
        </property>
    </bean>
    <bean id="mappingJacksonHttpMessageConverter"
        class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter" >
          <property name="supportedMediaTypes">
                <list><value>application/json;charset=UTF-8</value></list>
          </property>
          <property name="prettyPrint" value="false"/>
    </bean>

jar包:

jackson-annotations-2.7.0.jar,jackson-core-2.7.0.jar,jackson-databind-2.5.5.jar。

 

posted on 2017-01-13 09:53  darkcode  阅读(2035)  评论(0编辑  收藏  举报