The server cannot or will not process the request due to something that is perceived to be a client

Posted 2021-01-01 sysocjs

使用SpringMVC，页面跳转时出现Bad Request：

信息如下：

Type Status Report

Message Required String parameter ‘description‘ is not present

Description The server cannot or will not process the request due to something that is perceived to be a client error (e.g., malformed request syntax, invalid request message framing, or deceptive request routing).

Message那里的‘description’是表单的一个参数，因为这个是第一个参数，所以只显示了description。使用springmvc上传文件功能时出现Bad Request，除了表单类型与@RequestParam POJO的属性类型不一致导致的原因外，还有一个可能性原因，就是没有配置MultipartResolver，因为springmvc默认情况下没有装配MultipartResolver，下面是配置MultipartResolver：

<!-- 配置上传文件 -->
    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <property name="maxUploadSize">
            <value>10485760</value>
        </property>
        <property name="defaultEncoding">
            <value>UTF-8</value>
        </property>
    </bean>