使用SpringMVC的@RequestBody后出现415错误

电玩女神 2022-05-21 01:08 161阅读 0赞

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 ">
    
        
        <context:component-scan base-package="com.mingtai.mavenweb">
          
        </context:component-scan>
    
        
        <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"/>
    
        
        <bean class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter">
            <property name="messageConverters">
                <list>
                    <ref bean="mappingJacksonHttpMessageConverter"/> 
                    <ref bean= "stringHttpMessageConverter" />
                    <ref bean="jsonHttpMessageConverter" />
                    
                </list>
            </property>
        </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>
    
    
        
        <bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
            
            <property name="defaultEncoding" value="UTF-8"/>
            
            <property name="maxUploadSize" value="32505856"/>
            
            <property name="maxInMemorySize" value="4096"/>
        </bean>
    </beans>

更改之后

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>
        
        <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>
            
            <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>
    
            
            <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>
            
            <dependency>
                <groupId>mysql</groupId>
                <artifactId>mysql-connector-java</artifactId>
            </dependency>
            
            <dependency>
                <groupId>com.alibaba</groupId>
                <artifactId>druid</artifactId>
            </dependency>
    
            
            <dependency>
                <groupId>commons-fileupload</groupId>
                <artifactId>commons-fileupload</artifactId>
            </dependency>
            
            <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>
    
            
            <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>jstl</groupId>
                <artifactId>jstl</artifactId>
                <version>1.2</version>
            </dependency>
    
        </dependencies>
    
        <build>
            <finalName>mavenweb_manage_web</finalName>
    
            
                
                    
                        
                        
                    
                    
                    
                        
                        
                    
                    
                        
                        
                    
                    
                        
                        
                    
                    
                        
                        
                    
                    
                        
                        
                    
                    
                        
                        
                    
                
            
    
    
            <resources>
                
                <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.csdn.net/yixiaoping/article/details/45281721\#comments][https_blog.csdn.net_yixiaoping_article_details_45281721_comments]  
链接2：[https://www.jianshu.com/p/a5ca1fc63f81][https_www.jianshu.com_p_a5ca1fc63f81]  
链接3：[https://blog.csdn.net/kility/article/details/70144931][https_blog.csdn.net_kility_article_details_70144931]  
链接4：[https://www.cnblogs.com/qq78292959/p/3761646.html][https_www.cnblogs.com_qq78292959_p_3761646.html]

[https_blog.csdn.net_yixiaoping_article_details_45281721_comments]: https://blog.csdn.net/yixiaoping/article/details/45281721#comments
[https_www.jianshu.com_p_a5ca1fc63f81]: https://www.jianshu.com/p/a5ca1fc63f81
[https_blog.csdn.net_kility_article_details_70144931]: https://blog.csdn.net/kility/article/details/70144931
[https_www.cnblogs.com_qq78292959_p_3761646.html]: https://www.cnblogs.com/qq78292959/p/3761646.html