如何使用TOMCAT和Jackson在沒有JSP的SPRING MVC中將POJO轉換爲JSON？

我要創建項目，我必須像轉換：如何使用TOMCAT和Jackson在沒有JSP的SPRING MVC中將POJO轉換爲JSON？

http://localhost:8080/api/hello?person=Willie

喜歡的東西：

{
「消息」：「您好，威利」
}

我的POJO類Model.java：

package com.mycompany.zad2; 
public class Model { 

    private String person; 

    public void setPerson(String person) { 
     this.person = person; 
    } 

    public String getPerson() { 
     return person; 
    }}

我的web.xml

<?xml version="1.0" encoding="UTF-8"?> 
<web-app version="3.0" xmlns="http://java.sun.com/xml/ns/javaee" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/javaee http://java.sun.com/xml/ns/javaee/web-app_3_0.xsd"> 
    <context-param> 
     <param-name>contextConfigLocation</param-name> 
     <param-value>applicationContext.xml</param-value> 
    </context-param> 
    <listener> 
     <listener-class>org.springframework.web.context.ContextLoaderListener</listener-class> 
    </listener> 
    <servlet> 
     <servlet-name>dispatcher</servlet-name> 
     <servlet-class>org.springframework.web.servlet.DispatcherServlet</servlet-class> 
     <load-on-startup>2</load-on-startup> 
    </servlet> 
    <servlet-mapping> 
     <servlet-name>dispatcher</servlet-name> 
     <url-pattern>/*</url-pattern> 
    </servlet-mapping> 
    <session-config> 
     <session-timeout> 
      30 
     </session-timeout> 
    </session-config> 
</web-app>

我的控制器JSONController.java類：

package controller; 
import org.springframework.stereotype.Controller; 
import org.springframework.web.bind.annotation.RequestMapping; 
import org.springframework.web.bind.annotation.RequestMethod; 
import org.springframework.web.bind.annotation.ResponseBody; 
import com.mycompany.zad2.Model; 
import org.springframework.web.bind.annotation.RequestParam; 
@Controller 
@RequestMapping("/api/hello/") 
public class JSONController { 
    @RequestMapping(value = "person",method = RequestMethod.GET) 
    @ResponseBody 
    public Model jsoncontrol(@RequestParam(required = true,value ="person") String person) { 
     Model m = new Model(); 
     m.setPerson(person); 
     return m; 

    } 
}

我的pom.xml

<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"> 
    <modelVersion>4.0.0</modelVersion> 

    <groupId>com.mycompany</groupId> 
    <artifactId>zad2</artifactId> 
    <version>1.0-SNAPSHOT</version> 
    <packaging>war</packaging> 

    <name>zad2</name> 

    <properties> 
     <endorsed.dir>${project.build.directory}/endorsed</endorsed.dir> 
     <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding> 
     <spring.version>3.1.1.RELEASE</spring.version> 
     <jackson.version>1.9.13</jackson.version> 
     <jdk.version>1.7</jdk.version> 
    </properties> 

    <dependencies> 
     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-aop</artifactId> 
      <version>3.1.1.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-asm</artifactId> 
      <version>3.1.1.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-aspects</artifactId> 
      <version>3.1.1.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-beans</artifactId> 
      <version>3.1.1.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-context</artifactId> 
      <version>3.1.1.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-context-support</artifactId> 
      <version>3.1.1.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-core</artifactId> 
      <version>3.1.1.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-expression</artifactId> 
      <version>3.1.1.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-instrument</artifactId> 
      <version>3.1.1.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-instrument-tomcat</artifactId> 
      <version>3.1.1.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-jdbc</artifactId> 
      <version>3.1.1.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-jms</artifactId> 
      <version>3.1.1.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-orm</artifactId> 
      <version>3.1.1.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-oxm</artifactId> 
      <version>3.1.1.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-test</artifactId> 
      <version>3.1.1.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-tx</artifactId> 
      <version>3.1.1.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-web</artifactId> 
      <version>3.1.1.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-webmvc-portlet</artifactId> 
      <version>3.1.1.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-webmvc</artifactId> 
      <version>3.1.1.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework</groupId> 
      <artifactId>spring-struts</artifactId> 
      <version>3.1.1.RELEASE</version> 
     </dependency> 
     <dependency> 
      <groupId>javax.servlet</groupId> 
      <artifactId>jstl</artifactId> 
      <version>1.1.2</version> 
     </dependency> 
     <dependency> 
      <groupId>taglibs</groupId> 
      <artifactId>standard</artifactId> 
      <version>1.1.2</version> 
     </dependency> 
     <dependency> 
      <groupId>javax</groupId> 
      <artifactId>javaee-web-api</artifactId> 
      <version>6.0</version> 
      <scope>provided</scope> 
     </dependency> 
     <dependency> 
      <groupId>org.codehaus.jackson</groupId> 
      <artifactId>jackson-mapper-asl</artifactId> 
      <version>1.9.13</version> 
     </dependency> 
     <dependency> 
      <groupId>org.springframework.security</groupId> 
      <artifactId>spring-security-config</artifactId> 
      <version>3.1.4.RELEASE</version> 
     </dependency> 

    </dependencies> 

    <build> 
     <plugins> 
      <plugin> 
       <groupId>org.apache.maven.plugins</groupId> 
       <artifactId>maven-compiler-plugin</artifactId> 
       <version>2.3.2</version> 
       <configuration> 
        <source>1.6</source> 
        <target>1.6</target> 
        <compilerArguments> 
         <endorseddirs>${endorsed.dir}</endorseddirs> 
        </compilerArguments> 
       </configuration> 
      </plugin> 
      <plugin> 
       <groupId>org.apache.maven.plugins</groupId> 
       <artifactId>maven-war-plugin</artifactId> 
       <version>2.1.1</version> 
       <configuration> 
        <failOnMissingWebXml>false</failOnMissingWebXml> 
       </configuration> 
      </plugin> 
      <plugin> 
       <groupId>org.apache.tomcat.maven</groupId> 
       <artifactId>tomcat7-maven-plugin</artifactId> 
       <version>2.2</version> 
       <configuration> 
        <path>/</path> 
       </configuration> 
      </plugin> 
      <plugin> 
       <groupId>org.apache.maven.plugins</groupId> 
       <artifactId>maven-dependency-plugin</artifactId> 
       <version>2.1</version> 
       <executions> 
        <execution> 
         <phase>validate</phase> 
         <goals> 
          <goal>copy</goal> 
         </goals> 
         <configuration> 
          <outputDirectory>${endorsed.dir}</outputDirectory> 
          <silent>true</silent> 
          <artifactItems> 
           <artifactItem> 
            <groupId>javax</groupId> 
            <artifactId>javaee-endorsed-api</artifactId> 
            <version>6.0</version> 
            <type>jar</type> 
           </artifactItem> 
          </artifactItems> 
         </configuration> 
        </execution> 
       </executions> 
      </plugin> 
     </plugins> 
     <finalName> 
      spring-mvc-json 
     </finalName> 
    </build> 

</project>

和我的調度員servlet.xml中

<?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:p="http://www.springframework.org/schema/p" 
     xmlns:aop="http://www.springframework.org/schema/aop" 
     xmlns:tx="http://www.springframework.org/schema/tx" 
     xsi:schemaLocation=" 
     http://www.springframework.org/schema/beans 
     http://www.springframework.org/schema/beans/spring-beans-3.1.xsd 

     http://www.springframework.org/schema/aop 
     http://www.springframework.org/schema/aop/spring-aop-3.1.xsd 

     http://www.springframework.org/schema/tx 
     http://www.springframework.org/schema/tx/spring-tx-3.1.xsd 

     http://www.springframework.org/schema/security 
     http://www.springframework.org/schema/security/spring-security-3.2.xsd 

     http://www.springframework.org/schema/context 
     http://www.springframework.org/schema/context/spring-context-3.1.xsd"> 

<context:component-scan base-package="com.mycompany.controller"/> 
<mvc:annotation-driven/> 
</beans>

請help..what我需要做的就是JSON不是HTTP狀態404個

問候！

來源

2013-12-13 Piotr Retmańczyk

刪除最後一個'/'您''RequestMapping' @RequestMapping（「/ API /你好」）' –

這個稱號需要一些更多的關鍵字 –

@KevinBowersox同樣的故事，它仍然是HTTP狀態404 –

根據您的請求映射，你的要求應該是這樣的：

http://localhost:8080/[contextRoot/]api/hello/person?person=Willie

通知，你有哪兩個變化。首先是可能丟失的contextRoot值，具體取決於WAR文件的名稱。第二個是在/api/hello之後缺少/person以匹配您的@RequestMapping。

假設你的戰爭被命名爲spring-mvc-json.war那麼這個請求將是：

http://localhost:8080/spring-mvc-json/api/hello/person?person=Willie

來源

2013-12-13 00:39:13

好吧這很有用:)非常感謝你。現在我沒有404，但它仍然不檢索JSON。現在它是空白頁面。 –

如何使用TOMCAT和Jackson在沒有JSP的SPRING MVC中將POJO轉換爲JSON？

回答

相關問題