使用SpringMVC的@RequestBody后出现415错误

昨天写程序,利用ajax向后台发送json对象请求的时候出现了415错误,网上的方法试了一大堆都不管用,后台我将springMVC的配置文件改成了前的,就可以了

springMVC更改之前

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:context="http://www.springframework.org/schema/context"
       xsi:schemaLocation="http://www.springframework.org/schema/beans
                            http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
                            http://www.springframework.org/schema/context
                            http://www.springframework.org/schema/context/spring-context-4.0.xsd
                         ">

    <!-- 自动扫描  @Controller-->
    <context:component-scan base-package="com.mingtai.mavenweb">
      <!--  <context:exclude-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice"></context:exclude-filter>-->
    </context:component-scan>

    <!--避免IE执行AJAX时,返回JSON出现下载文件 -->
    <bean id="mappingJacksonHttpMessageConverter"
          class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
        <property name="supportedMediaTypes">
            <list>
                <value>text/html;charset=UTF-8</value>
            </list>
        </property>
    </bean>

    <bean id="jsonHttpMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
        <property name="supportedMediaTypes">
            <list>
                <value>application/json;charset=UTF-8</value>
            </list>
        </property>
    </bean>

    <bean id = "stringHttpMessageConverter" class = "org.springframework.http.converter.StringHttpMessageConverter"/>

    <!-- 启动SpringMVC的注解功能,完成请求和注解POJO的映射 -->
    <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
        <property name="messageConverters">
            <list>
                <ref bean="mappingJacksonHttpMessageConverter"/> <!-- JSON转换器 -->
                <ref bean= "stringHttpMessageConverter" />
                <ref bean="jsonHttpMessageConverter" />
                <!--     <ref bean= "jsonHttpMessageConverter" />
                     <ref bean= "formHttpMessageConverter" />-->
            </list>
        </property>
    </bean>


    <!-- 配置视图解释器 jsp -->
   <!-- <bean id="jspViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/jsp/"/>
        <property name="suffix" value=".jsp"/>
    </bean>-->
    <bean id="jspViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">

        <property name="prefix" value="/WEB-INF/html/"/>
        <property name="suffix" value=".html"/>
        <property name="contentType" value="text/html"/>
    </bean>


    <!-- 文件上传配置 -->
    <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
        <!-- 默认编码 -->
        <property name="defaultEncoding" value="UTF-8"/>
        <!-- 上传文件大小限制为31M,31*1024*1024 -->
        <property name="maxUploadSize" value="32505856"/>
        <!-- 内存中的最大值 -->
        <property name="maxInMemorySize" value="4096"/>
    </bean>
</beans>

更改之后

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="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/beans
                            http://www.springframework.org/schema/beans/spring-beans-4.0.xsd
                            http://www.springframework.org/schema/context
                            http://www.springframework.org/schema/context/spring-context-4.0.xsd
                             http://www.springframework.org/schema/mvc http://www.springframework.org/schema/mvc/spring-mvc.xsd
                         ">

    <context:component-scan base-package="com.mingtai.mavenweb">
        <!--<context:exclude-filter type="annotation" expression="org.springframework.web.bind.annotation.ControllerAdvice"></context:exclude-filter>-->
    </context:component-scan>
    <mvc:annotation-driven>
        <mvc:message-converters register-defaults="true">
            <bean class="com.alibaba.fastjson.support.spring.FastJsonHttpMessageConverter">
                <property name="supportedMediaTypes" value="application/json" />
                <property name="features">
                    <list>
                        <!--设置null值也要输出,fastjson默认是关闭的-->
                        <value>WriteMapNullValue</value>
                        <!--设置使用文本方式输出日期,fastjson默认是long-->
                        <value>WriteDateUseDateFormat</value>
                    </list>
                </property>
            </bean>
        </mvc:message-converters>
    </mvc:annotation-driven>

    <bean id="jspViewResolver" class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/html/"/>
        <property name="suffix" value=".html"/>
        <property name="contentType" value="text/html"/>
    </bean>
</beans>

pom文件

<?xml version="1.0" encoding="UTF-8"?>

<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">
    <parent>
        <artifactId>mavenweb_parent</artifactId>
        <groupId>com.mavenweb</groupId>
        <version>1.0-SNAPSHOT</version>
        <relativePath>../mavenweb_parent/pom.xml</relativePath>
    </parent>
    <modelVersion>4.0.0</modelVersion>

    <artifactId>mavenweb_manage_web</artifactId>
    <packaging>war</packaging>

    <name>mavenweb_manage_web Maven Webapp</name>
    <!-- FIXME change it to the project's website -->
    <url>http://www.example.com</url>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <maven.compiler.source>1.8</maven.compiler.source>
        <maven.compiler.target>1.8</maven.compiler.target>
    </properties>

    <dependencies>
        <dependency>
            <groupId>com.mavenweb</groupId>
            <artifactId>mavenweb_manage</artifactId>
            <version>1.0-SNAPSHOT</version>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
        </dependency>
        <!-- Spring -->
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context</artifactId>

        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-beans</artifactId>

        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-webmvc</artifactId>

        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jdbc</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-aspects</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-jms</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-context-support</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework</groupId>
            <artifactId>spring-test</artifactId>
        </dependency>


        <dependency>
            <groupId>junit</groupId>
            <artifactId>junit</artifactId>
        </dependency>
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>fastjson</artifactId>
        </dependency>
        <dependency>
            <groupId>javassist</groupId>
            <artifactId>javassist</artifactId>
        </dependency>
        <dependency>
            <groupId>commons-codec</groupId>
            <artifactId>commons-codec</artifactId>
        </dependency>
        <dependency>
            <groupId>javax.servlet</groupId>
            <artifactId>servlet-api</artifactId>
            <scope>provided</scope>
        </dependency>

        <!-- Mybatis -->
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis</artifactId>
        </dependency>
        <dependency>
            <groupId>org.mybatis</groupId>
            <artifactId>mybatis-spring</artifactId>
        </dependency>
        <dependency>
            <groupId>com.github.miemiedev</groupId>
            <artifactId>mybatis-paginator</artifactId>
        </dependency>
        <!-- MySql -->
        <dependency>
            <groupId>mysql</groupId>
            <artifactId>mysql-connector-java</artifactId>
        </dependency>
        <!-- 连接池 -->
        <dependency>
            <groupId>com.alibaba</groupId>
            <artifactId>druid</artifactId>
        </dependency>

        <!-- 文件上传组件 -->
        <dependency>
            <groupId>commons-fileupload</groupId>
            <artifactId>commons-fileupload</artifactId>
        </dependency>
        <!-- 缓存 -->
        <dependency>
            <groupId>redis.clients</groupId>
            <artifactId>jedis</artifactId>
        </dependency>
        <dependency>
            <groupId>org.springframework.data</groupId>
            <artifactId>spring-data-redis</artifactId>
        </dependency>
        <dependency>
            <groupId>org.freemarker</groupId>
            <artifactId>freemarker</artifactId>
        </dependency>


        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpcore</artifactId>

        </dependency>
        <dependency>
            <groupId>org.apache.httpcomponents</groupId>
            <artifactId>httpclient</artifactId>
        </dependency>
        <dependency>
            <groupId>dom4j</groupId>
            <artifactId>dom4j</artifactId>

        </dependency>
        <dependency>
            <groupId>xml-apis</groupId>
            <artifactId>xml-apis</artifactId>
        </dependency>

        <!-- https://mvnrepository.com/artifact/commons-dbcp/commons-dbcp -->
        <dependency>
            <groupId>commons-dbcp</groupId>
            <artifactId>commons-dbcp</artifactId>
            <version>1.3</version>
        </dependency>

        <dependency>
            <groupId>org.codehaus.jackson</groupId>
            <artifactId>jackson-mapper-asl</artifactId>
            <version>1.9.13</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.5.1</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.5.1</version>
        </dependency>


      <!--
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.5.2</version>
        </dependency>

        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.5.2</version>
        </dependency>-->
        <!--因为页面在web工程,所以,jstl要在这里,jstl是JSP的一个标签库-->
        <!-- JSTL标签类 -->
        <dependency>
            <groupId>jstl</groupId>
            <artifactId>jstl</artifactId>
            <version>1.2</version>
        </dependency>

    </dependencies>

    <build>
        <finalName>mavenweb_manage_web</finalName>

        <!--<pluginManagement>&lt;!&ndash; lock down plugins versions to avoid using Maven defaults (may be moved to parent pom) &ndash;&gt;-->
            <!--<plugins>-->
                <!--<plugin>-->
                    <!--<artifactId>maven-clean-plugin</artifactId>-->
                    <!--<version>3.0.0</version>-->
                <!--</plugin>-->
                <!--&lt;!&ndash; see http://maven.apache.org/ref/current/maven-core/default-bindings.html#Plugin_bindings_for_war_packaging &ndash;&gt;-->
                <!--<plugin>-->
                    <!--<artifactId>maven-resources-plugin</artifactId>-->
                    <!--<version>3.0.2</version>-->
                <!--</plugin>-->
                <!--<plugin>-->
                    <!--<artifactId>maven-compiler-plugin</artifactId>-->
                    <!--<version>3.7.0</version>-->
                <!--</plugin>-->
                <!--<plugin>-->
                    <!--<artifactId>maven-surefire-plugin</artifactId>-->
                    <!--<version>2.20.1</version>-->
                <!--</plugin>-->
                <!--<plugin>-->
                    <!--<artifactId>maven-war-plugin</artifactId>-->
                    <!--<version>3.2.0</version>-->
                <!--</plugin>-->
                <!--<plugin>-->
                    <!--<artifactId>maven-install-plugin</artifactId>-->
                    <!--<version>2.5.2</version>-->
                <!--</plugin>-->
                <!--<plugin>-->
                    <!--<artifactId>maven-deploy-plugin</artifactId>-->
                    <!--<version>2.8.2</version>-->
                <!--</plugin>-->
            <!--</plugins>-->
        <!--</pluginManagement>-->


        <resources>
            <!--将java代码目录中的xml输出,默认不输出除resources目录外的xml文件-->
            <resource>
                <directory>src/main/java</directory>
                <includes>
                    <include>**/*.xml</include>
                </includes>
            </resource>
        </resources>
    </build>
</project>

controller方法

 @RequestMapping({"/customer/saveCustomer.do"})
    @ResponseBody
    public String saveCustomer(@RequestBody Customer customer) {
        System.out.println("id为++++++++++++++++" + customer.getCust_name());
        System.out.println("id为++++++++++++++++" + customer.getCust_id());
        if (customer.getCust_id() == null) {
            System.out.println("添加");
            this.customerService.addCustomer(customer);
        } else {
            System.out.println("修改");
            this.customerService.updateCustomer(customer);
        }

        return "VueCustomerList";
    }

这里有几个依赖很特别


 <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-core</artifactId>
            <version>2.5.1</version>
        </dependency>
        <dependency>
            <groupId>com.fasterxml.jackson.core</groupId>
            <artifactId>jackson-databind</artifactId>
            <version>2.5.1</version>
        </dependency>

又一次,我添加了下面这个jar包,竟然神奇的运行成功了,这时我将springMVC的配置文件改为以前的,看能不能运行成功,以此来判断是否是少了下面这个jar包的问题,结果失败,然后又改为了成功的那个springMVC配置文件,结果也不行了,然后,之后又把该jar包去掉,再运行,就又成功了。。。。一头雾水,到现在我都不知道怎么回事。。。

<dependency>
      <groupId>com.fasterxml.jackson.core</groupId>
      <artifactId>jackson-annotations</artifactId>
      <version>2.8.4</version>
    </dependency>

就这么神奇的好了,我自己都不知道哪里出了问题

补充:因该还是前台发送ajax请求时的问题,最近用公司的框架写东西,也出现了这个问题,首先排除了环境问题,因为公司的代码,也有用到这个的,但是完全没有问题,后台我调用了公司封装好的发送post请求的代码,就没有这个问题了。

错误的代码:

 Util.httpPost(this.api.page, query, function (result) {
                    app.showLoading = false;
                    if (result.success) {
                        app.submitList = result.data.rows;
                         app.pagination.total = result.data.total;
                    }
                });

正确的代码:

 Util.httpPostJson(this.api.submitOrCancel, app.archive, function (result) {
                if (result.success) {
                    if (status == 0) {
                        app.$message({message: '撤稿成功', type: 'success'});
                        app.getSubmitList();
                        console.log("执行加载函数");
                    }
                    if (status == 1) {
                        app.$message({message: '提交成功', type: 'success'});
                        app.getSubmitList();
                        console.log("执行加载函数");
                    }

httpPostJson的源码

 httpPostJson: function (url, data, callback) {
        axios.post(url, data)
            .then(function (response) {
                Util.checkHttpLogin(response, function (result) {
                    if (callback) callback(result, data);
                });
            })
            .catch(function (error) {
                console.log(error);
                if (callback) callback({success:false, message: "网络请求异常."}, data);
            });
    },

checkHttpLogin源码

//检查API请求是否需要登录,如果需要登录则跳转到重新登录页面,登录成功后刷新当前页面
    checkHttpLogin: function (response, callback) {
        if (browser.versions.mobile) {
            if (browser.versions.iPhone | browser.versions.android) {
                Util.checkHttpMobileLogin(response, callback);
            } else if (browser.versions.app) {
                // Util.checkHttpAppLogin(response, callback);
            }
        } else {
            Util.checkHttpPCLogin(response, callback);
        }
    }

推荐几个,比较好的在使用了@Request后出现415问题的帖子

链接1:https://blog.youkuaiyun.com/yixiaoping/article/details/45281721#comments
链接2:https://www.jianshu.com/p/a5ca1fc63f81
链接3:https://blog.youkuaiyun.com/kility/article/details/70144931
链接4:https://www.cnblogs.com/qq78292959/p/3761646.html

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