如何在 api 请求中发送 json 文件

Question

我在发送请求 RestController 的 json 文件时遇到问题，请查看下面的详细信息

我有一个 json 文件，假设 test.json

{
    "PolicyNumber": "123",
    "Type": "Test",
    "Tenture": "10",
    "SDate": "10-July-2016",
    "HName": "Test User",
    "Age": "10"
}

我要发送test.json文件邮递员

测试控制器

@RestController
public class TestController {
    
    @PostMapping(value="/uploadJsonFile", consumes= {MediaType.MULTIPART_FORM_DATA_VALUE},
             produces = {MediaType.APPLICATION_JSON_VALUE} )
    
    public ResponseEntity<String> uplaodFile(@RequestPart MultipartFile file){
        
        System.out.println("Original File Name :- "+file.getOriginalFilename());
        System.out.println("File type :- "+file.getName());
        System.out.println("File Size :- "+file.getSize()); 
        System.out.println("Content Type :- "+file.getContentType());
        //Validation file is empty
        if(file.isEmpty()) {
            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body("File is Empty Insert Data"); 
        }
        
        if(!file.getContentType().equals("application/json")) {
            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body("only json file content"); 
        }
        return ResponseEntity.ok("Upload File Sucessfully"); 
    }
}

我试过如下几种方法在方法中，如果我使用 @RequestBody ，文件为空，当我使用 @ResponseBody 或 @RequestPart 邮递员给出 400 bad request 错误消息

我也尝试使用 @Controller 和 @RequestMapping(value="/uploadJsonFile", method= RequestMethod.POST 但没有成功

Pom.xml 文件

<properties>
        <java-version>1.8</java-version>
        <spring.version>4.3.26.RELEASE</spring.version>
        <hibernate.version>5.1.0.Final</hibernate.version>
        <springsecurity.version>4.2.15.RELEASE</springsecurity.version>
        <logback.version>1.2.3</logback.version>
        <jcl.slf4j.version>1.7.30</jcl.slf4j.version>
    </properties>

Web.xml

<?xml version="1.0" encoding="UTF-8"?>
<web-app id="WebApp_ID" version="2.5"
    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_5.xsd">
    <display-name>TestWebApp</display-name>
    <welcome-file-list>
        <welcome-file>/WEB-INF/index.jsp</welcome-file>
    </welcome-file-list>
    

    <servlet>
        <servlet-name>dispatcher</servlet-name>
        <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class>
        <init-param>
            <param-name>contextConfigLocation</param-name>
            <param-value>/WEB-INF/spring-servlet.xml</param-value>
        </init-param>
        <load-on-startup>1</load-on-startup>
    </servlet>
    <servlet-mapping>
        <servlet-name>dispatcher</servlet-name>
        <url-pattern>/*</url-pattern>
    </servlet-mapping>  
</web-app>

Spring-servlet.xml

<?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:tx="http://www.springframework.org/schema/tx"
    xmlns:mvc="http://www.springframework.org/schema/mvc"
    xmlns:p="http://www.springframework.org/schema/p"
    xmlns:aop="http://www.springframework.org/schema/aop"
    xmlns:security="http://www.springframework.org/schema/security"
    xsi:schemaLocation="http://www.springframework.org/schema/beans 
    http://www.springframework.org/schema/beans/spring-beans-4.2.xsd
    http://www.springframework.org/schema/context 
    http://www.springframework.org/schema/context/spring-context-4.2.xsd
    http://www.springframework.org/schema/tx 
    http://www.springframework.org/schema/tx/spring-tx-4.2.xsd
    http://www.springframework.org/schema/mvc 
    http://www.springframework.org/schema/mvc/spring-mvc-4.2.xsd
    http://www.springframework.org/schema/security 
    http://www.springframework.org/schema/security/spring-security-4.2.xsd
    http://www.springframework.org/schema/aop
    http://www.springframework.org/schema/aop/spring-aop-4.2.xsd">

    <mvc:annotation-driven />
    <context:component-scan
        base-package="com.test.api" />
    <context:annotation-config />
 
    <context:property-placeholder
        location="classpath:application.properties" />

    <mvc:resources mapping="/resources/**"
        location="/resources/" />
        
 <mvc:annotation-driven validator="validator"/> 
 
        <bean id="messageSource"
        class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
        <property name="basename" value="classpath:message" />
        <property name="defaultEncoding" value="UTF-8" />
    </bean>
    
     
    <bean id="validator" class="org.springframework.validation.beanvalidation.LocalValidatorFactoryBean">
        <property name="validationMessageSource" ref="messageSource"/>
    </bean>
    
    <bean
        class="org.springframework.web.servlet.mvc.annotation.DefaultAnnotationHandlerMapping" />
    <bean
        class="org.springframework.web.servlet.mvc.annotation.AnnotationMethodHandlerAdapter" />

    <bean
        class="org.springframework.web.servlet.view.InternalResourceViewResolver">
        <property name="prefix" value="/WEB-INF/views/" />
        <property name="suffix" value=".jsp" />
    </bean>
        <aop:aspectj-autoproxy/>
</beans>

注意：- 我有一个非常大的 json 文件，所以不能将其作为 json 数据发送，只需要发送 json 文件

非常感谢这里的任何帮助

Answer 1

您是否尝试过根据您的要求修改密钥名称？在您的代码中，您将 'file' 命名为您的 MultipartFile，但在邮递员中，您将 'type' 命名为您的关键文本。尝试命名 'file' 而不是 'type'

Answer 2

想添加我的答案，以防同样面临类似问题的人可以使用它。测试控制器

@RestController
public class TestController {
    
    @PostMapping("/uploadJsonFile")    
    public ResponseEntity<String> uplaodFile(@RequestParam("file") final MultipartFile file){
        
        System.out.println("Original File Name :- "+file.getOriginalFilename());
        System.out.println("File type :- "+file.getName());
        System.out.println("File Size :- "+file.getSize()); 
        System.out.println("Content Type :- "+file.getContentType());
        //Validation file is empty
        if(file.isEmpty()) {
            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body("File is Empty Insert Data"); 
        }
        
        if(!file.getContentType().equals("application/json")) {
            return ResponseEntity.status(HttpStatus.INTERNAL_SERVER_ERROR).body("only json file content"); 
        }
        return ResponseEntity.ok("Upload File Sucessfully"); 
    }
}

邮递员请求

如何在 api 请求中发送 json 文件

How to send jsonfile in api Request

java

api

spring

json