问题
I'm fairly new to spring Restful programming The requirement to use the controller method as a rest service, so I'm trying to return an object in a JSON format, but for some reason I'm getting a response code as 500 with no errors and exceptions in log files.
But it is successfully working if I the return type is of a string rather an object
I'm using the jackson dependencies and I'm configuring in context file and in a assumption that converts the object to json format and puts in the response body on using @ResponseBody annotation
//Response code 500 If I return an object
@RequestMapping(value = "/donorSummary", method = RequestMethod.GET,produces = "application/json")
@PreAuthorize("hasRole('"+PermissionConstants.VIEW_DONOR+"')")
public @ResponseBody Donor donorSummaryGenerator(HttpServletRequest request, Model model,HttpServletResponse response,
@RequestParam(value = "donorId", required = false) Long donorId) {
//some code here
return donorObject;
}
//Working if I return a string
@RequestMapping(value = "/donorSummary", method = RequestMethod.GET,produces = "application/json")
@PreAuthorize("hasRole('"+PermissionConstants.VIEW_DONOR+"')")
public @ResponseBody StringdonorSummaryGenerator(HttpServletRequest request, Model model,HttpServletResponse response,
@RequestParam(value = "donorId", required = false) Long donorId) {
//some oode here
return donorObject.toString();
}
ApplicationContext File
<?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"
xmlns:p="http://www.springframework.org/schema/p"
xmlns:tx="http://www.springframework.org/schema/tx"
xmlns:task="http://www.springframework.org/schema/task"
xmlns:int="http://www.springframework.org/schema/integration"
xmlns:int-mail="http://www.springframework.org/schema/integration/mail"
xmlns:security="http://www.springframework.org/schema/security"
xmlns:util="http://www.springframework.org/schema/util"
xsi:schemaLocation="http://www.springframework.org/schema/beans
http://www.springframework.org/schema/beans/spring-beans-3.1.xsd
http://www.springframework.org/schema/security
http://www.springframework.org/schema/security/spring-security-3.1.xsd
http://www.springframework.org/schema/mvc
http://www.springframework.org/schema/mvc/spring-mvc-3.1.xsd
http://www.springframework.org/schema/integration
http://www.springframework.org/schema/integration/spring-integration-2.2.xsd
http://www.springframework.org/schema/integration/mail
http://www.springframework.org/schema/integration/mail/spring-integration-mail-2.2.xsd
http://www.springframework.org/schema/util
http://www.springframework.org/schema/util/spring-util-2.0.xsd
http://www.springframework.org/schema/context
http://www.springframework.org/schema/context/spring-context-3.0.xsd
http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd
http://www.springframework.org/schema/task http://www.springframework.org/schema/task/spring-task-3.1.xsd">
<!-- Annotations like PreAuthorize, needed here and not in security-v2v-servlet.xml
as this is the MVC configuration dealing with URLs??? -->
<security:global-method-security pre-post-annotations="enabled" />
<context:property-placeholder location="classpath:database.properties" />
<!-- Configures the @Controller programming model -->
<mvc:annotation-driven />
<context:component-scan base-package="controller" />
<context:component-scan base-package="repository" />
<context:component-scan base-package="model" />
<context:component-scan base-package="viewmodel" />
<context:component-scan base-package="tasks" />
<context:component-scan base-package="utils" />
<context:component-scan base-package="security" />
<bean id="messageSource"
class="org.springframework.context.support.ReloadableResourceBundleMessageSource">
<property name="basenames">
<list>
<value>classpath:messages</value>
</list>
</property>
</bean>
<bean id="viewResolver"
class="org.springframework.web.servlet.view.UrlBasedViewResolver">
<property name="viewClass"
value="org.springframework.web.servlet.view.JstlView" />
<property name="prefix" value="/WEB-INF/jsp/" />
<property name="suffix" value=".jsp" />
</bean>
<bean id="dataSource" class="com.mchange.v2.c3p0.ComboPooledDataSource"
destroy-method="close">
<property name="driverClass" value="${database.driver}" />
<property name="jdbcUrl" value="${database.url}" />
<property name="user" value="${database.user}" />
<property name="password" value="${database.password}" />
<!-- these are C3P0 properties -->
<property name="acquireIncrement" value="${database.acquireIncrement}" />
<property name="minPoolSize" value="${database.minPoolSize}" />
<property name="maxPoolSize" value="${database.maxPoolSize}" />
<property name="maxIdleTime" value="${database.maxIdleTime}" />
</bean>
<!-- persistence unit name comes from persistence.xml -->
<bean id="entityManagerFactory"
class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean"
p:dataSource-ref="dataSource" p:persistenceUnitName="v2v">
<property name="jpaProperties">
<props>
<prop key="hibernate.dialect">org.hibernate.dialect.MySQL5InnoDBDialect</prop>
<prop key="hibernate.show_sql">true</prop>
<prop key="hibernate.hbm2ddl.auto">none</prop>
<prop key="javax.persistence.validation.mode">none</prop>
</props>
</property>
</bean>
<bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
<property name="entityManagerFactory" ref="entityManagerFactory" />
</bean>
<bean id="applicationContextProvider" class="repository.events.ApplicationContextProvider"></bean>
<bean id="multipartResolver" class="org.springframework.web.multipart.commons.CommonsMultipartResolver">
</bean>
<mvc:interceptors>
<bean id="loggingInterceptor" class="interceptor.LoggingInterceptor" />
</mvc:interceptors>
<tx:annotation-driven transaction-manager="transactionManager" />
<task:executor id="executor" pool-size="5"/>
<task:scheduler id="scheduler" pool-size="5"/>
<task:annotation-driven scheduler="scheduler" executor="executor"/>
<property name="javaMailProperties">
<props>
<prop key="mail.smtp.starttls.enable">true</prop>
<prop key="mail.smtp.auth">true</prop>
</props>
</property>
</bean>
<int:service-activator input-channel="receiveEmailChannel"
ref="emailReceiverService"
method="receive" />
<int-mail:inbound-channel-adapter id="imapAdapter"
store-uri="imaps://${imap.username}:${imap.password}@imap.googlemail.com:993/INBOX"
java-mail-properties="javaMailProperties"
channel="receiveEmailChannel"
should-delete-messages="false"
should-mark-messages-as-read="false"
auto-startup="true"
>
</beans>
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>bsis</groupId>
<name>BSIS</name>
<description>(BSIS)</description>
<artifactId>bsis</artifactId>
<version>0.1</version>
<packaging>war</packaging>
<properties>
<webapp.name>bsis</webapp.name>
<cxf-version>2.2.10</cxf-version>
<liquibase.propertyFile>liquibase/liquibase.properties</liquibase.propertyFile>
</properties>
<build>
<finalName>${webapp.name}</finalName>
<sourceDirectory>src</sourceDirectory>
<testSourceDirectory>test</testSourceDirectory>
<resources>
<resource>
<directory>src</directory>
<excludes>
<exclude>**/*.java</exclude>
</excludes>
</resource>
</resources>
<testResources>
<testResource>
<directory>test</directory>
<filtering>false</filtering>
<includes>
<include>**/*.xml</include>
<include>**/*.sql</include>
</includes>
</testResource>
</testResources>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-surefire-plugin</artifactId>
<version>2.12</version>
<configuration>
<useFile>true</useFile>
<includes>
<include>**/*Tests.java</include>
<include>**/*Test.java</include>
</includes>
<excludes>
<exclude>**/Abstract*.java</exclude>
</excludes>
<reuseForks>false</reuseForks>
<forkCount>1</forkCount>
<junitArtifactName>junit:junit</junitArtifactName>
<parallel>methods</parallel>
<threadCount>10</threadCount>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.tomcat.maven</groupId>
<artifactId>tomcat7-maven-plugin</artifactId>
<version>2.2</version>
<configuration>
<server>tomcat</server>
</configuration>
</plugin>
<plugin>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.0</version>
<configuration>
<source>1.6</source>
<target>1.6</target>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.4</version>
<configuration>
<webXml>${basedir}/war/WEB-INF/web.xml</webXml>
<warSourceDirectory>${basedir}/war</warSourceDirectory>
</configuration>
</plugin>
<plugin>
<groupId>org.liquibase</groupId>
<artifactId>liquibase-maven-plugin</artifactId>
<version>2.0.3</version>
<configuration>
<propertyFile>liquibase/liquibase.properties</propertyFile>
</configuration>
<executions>
<execution>
<id></id>
<phase>verify</phase>
<goals>
<goal>update</goal>
</goals>
</execution>
</executions>
</plugin>
</plugins>
</build>
<dependencies>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.4</version>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-coyote</artifactId>
<version>7.0.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-api</artifactId>
<version>7.0.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-servlet-api</artifactId>
<version>7.0.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-juli</artifactId>
<version>7.0.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-util</artifactId>
<version>7.0.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.apache.tomcat</groupId>
<artifactId>tomcat-catalina</artifactId>
<version>7.0.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-c3p0</artifactId>
<version>4.1.6.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate.common</groupId>
<artifactId>hibernate-commons-annotations</artifactId>
<version>4.0.1.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-core</artifactId>
<version>4.1.6.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-entitymanager</artifactId>
<version>4.1.6.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-envers</artifactId>
<version>4.1.6.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate.javax.persistence</groupId>
<artifactId>hibernate-jpa-2.0-api</artifactId>
<version>1.0.1.Final</version>
</dependency>
<dependency>
<groupId>org.hibernate</groupId>
<artifactId>hibernate-validator</artifactId>
<version>4.3.0.Final</version>
</dependency>
<dependency>
<groupId>org.apache.httpcomponents</groupId>
<artifactId>httpclient</artifactId>
<version>4.2.3</version>
</dependency>
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>2.1</version>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.17</version>
</dependency>
<dependency>
<groupId>com.mchange</groupId>
<artifactId>mchange-commons-java</artifactId>
<version>0.2.3.3</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.22</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aop</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-aspects</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-beans</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context-support</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-core</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-expression</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-instrument</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-instrument-tomcat</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jms</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-orm</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-oxm</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>3.2.1.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-tx</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-web</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>1.7.2</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-simple</artifactId>
<version>1.7.2</version>
</dependency>
<dependency>
<groupId>javax.validation</groupId>
<artifactId>validation-api</artifactId>
<version>1.1.0.Final</version>
</dependency>
<dependency>
<groupId>aopalliance</groupId>
<artifactId>aopalliance</artifactId>
<version>1.0</version>
</dependency>
<dependency>
<groupId>antlr</groupId>
<artifactId>antlr</artifactId>
<version>2.7.7</version>
</dependency>
<dependency>
<groupId>c3p0</groupId>
<artifactId>c3p0</artifactId>
<version>0.9.1.2</version>
</dependency>
<dependency>
<groupId>cglib</groupId>
<artifactId>cglib-nodep</artifactId>
<version>2.2.2</version>
</dependency>
<dependency>
<groupId>commons-beanutils</groupId>
<artifactId>commons-beanutils</artifactId>
<version>1.8.3</version>
</dependency>
<dependency>
<groupId>commons-collections</groupId>
<artifactId>commons-collections</artifactId>
<version>3.2.1</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-lang3</artifactId>
<version>3.1</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
<version>1.1.1</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging-adapters</artifactId>
<version>1.1</version>
</dependency>
<dependency>
<groupId>commons-logging</groupId>
<artifactId>commons-logging-api</artifactId>
<version>1.1</version>
</dependency>
//Jackson dependencies
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-mapper-asl</artifactId>
<version>1.9.12</version>
</dependency>
<dependency>
<groupId>org.codehaus.jackson</groupId>
<artifactId>jackson-core-asl</artifactId>
<version>1.9.12</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-web</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-acl</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-aspects</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-config</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-core</artifactId>
<version>3.1.2.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.integration</groupId>
<artifactId>spring-integration-core</artifactId>
<version>2.2.3.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework.integration</groupId>
<artifactId>spring-integration-mail</artifactId>
<version>2.2.3.RELEASE</version>
</dependency>
<dependency>
<groupId>javax.mail</groupId>
<artifactId>mail</artifactId>
<version>1.4.7</version>
</dependency>
<dependency>
<groupId>org.springframework.security</groupId>
<artifactId>spring-security-taglibs</artifactId>
<version>3.1.4.RELEASE</version>
</dependency>
<dependency>
<groupId>org.liquibase</groupId>
<artifactId>liquibase-core</artifactId>
<version>2.0.3</version>
</dependency>
<dependency>
<groupId>turbine</groupId>
<artifactId>turbine</artifactId>
<version>2.1</version>
</dependency>
<dependency>
<groupId>net.sf.opencsv</groupId>
<artifactId>opencsv</artifactId>
<version>2.0</version>
</dependency>
<dependency>
<groupId>commons-fileupload</groupId>
<artifactId>commons-fileupload</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-io</artifactId>
<version>1.3.2</version>
</dependency>
<dependency>
<groupId>junit</groupId>
<artifactId>junit-dep</artifactId>
<version>4.8.2</version>
</dependency>
<dependency>
<groupId>org.mockito</groupId>
<artifactId>mockito-core</artifactId>
<version>1.9.5</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>com.github.springtestdbunit</groupId>
<artifactId>spring-test-dbunit</artifactId>
<version>1.0.0</version>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.dbunit</groupId>
<artifactId>dbunit</artifactId>
<version>2.4.9</version>
<scope>test</scope>
<exclusions>
<exclusion>
<artifactId>junit</artifactId>
<groupId>junit</groupId>
</exclusion>
</exclusions>
</dependency>
<dependency>
<groupId>com.jolbox</groupId>
<artifactId>bonecp</artifactId>
<version>0.8.0.RELEASE</version>
</dependency>
<dependency>
<groupId>org.hsqldb</groupId>
<artifactId>hsqldb</artifactId>
<version>2.2.8</version>
</dependency>
<dependency>
<groupId>org.hsqldb</groupId>
<artifactId>sqltool</artifactId>
<version>2.0.0</version>
</dependency>
<!--
<dependency>
<groupId>org.testng</groupId>
<artifactId>testng</artifactId>
<version>6.8</version>
<scope>test</scope>
</dependency>
-->
</dependencies>
</project>
回答1:
Spring MVC converts data to/from JSON (and other formats, e.g. XML) using message converters (implementations of the HttpMessageConverter interface).
The <mvc:annotation-driven /> tag in your Spring configuration registers the JSON message converter (among other things that it is doing). The only other thing that you need to do to start using JSON in your web services is placing Jackson libraries on your classpath (you said that you have them already):
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-core</artifactId>
<version>2.3.0</version>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.3.0</version>
</dependency>
Now, you also have some manual configuration for your JSON message converter:
<bean class="org.springframework.web.servlet.mvc.method.annotation.RequestMappingHandlerAdapter">
<property name="messageConverters">
<list>
<ref bean="jsonMessageConverter"/>
</list>
</property>
</bean>
<bean id="jsonMessageConverter" class="org.springframework.http.converter.json.MappingJackson2HttpMessageConverter">
</bean>
It is, probably, unnecessary. Try to remove it. The <mvc:annotation-driven /> tag is all you need to register the JSON message converter.
回答2:
Http Status code 500 is for internal server error.If you are creating a rest web service why don't you return valid internet media type like JSON , XML or YAML. You can use jackson library to map your 'Donor' reference to json/xml and then return it from the server. At the client end you can again map the json/xml to Donor reference using jackson library.
回答3:
Try this way:
Controller:
@Controller
@RequestMapping(value = "/testshare/service/location", produces = "application/json", consumes = "application/json")
public class LocationController {
@Autowired
private IStaticContentService staticContentService;
/**
* Service method to retrieve all <b>Locations</b> detail.
*
* @return response LocationResponse
* @throws ApplicationException
*/
@RequestMapping(value = "/getAllLocations", produces = "application/json", method = RequestMethod.POST, consumes = "application/json")
@ResponseBody
public LocationResponse loadAllLocations(@RequestBody BaseRequest request) {
LocationResponse response;
try {
response = staticContentService.getAllLocation();
response.header = ResponseBuilder.buildHeader(true);
} catch (ApplicationException e) {
response = ResponseBuilder.buildError(e, new LocationResponse());
} catch (RuntimeApplicationException e) {
response = ResponseBuilder.buildResponse(e, new LocationResponse());
} catch (Exception e) {
response = ResponseBuilder.buildResponse(e, new LocationResponse());
}
return response;
}
}
BaseRequest class:
import org.codehaus.jackson.annotate.JsonProperty;
public class BaseRequest {
@JsonProperty("header")
public Header header;
}
In your spring configuration:
<bean class="org.springframework.web.servlet.view.ContentNegotiatingViewResolver">
<property name="order" value="1" />
<property name="mediaTypes">
<map>
<entry key="json" value="application/json" />
<entry key="file" value="multipart/form-data" />
</map>
</property>
<property name="defaultViews">
<list>
<!-- JSON View -->
<bean class="org.springframework.web.servlet.view.json.MappingJacksonJsonView" />
</list>
</property>
</bean>
Maven dependency for Jackson org.codehaus.jackson jackson-mapper-asl 1.9.3
I have this checked with spring version 3.2.2.RELEASE.Should work for higher spring version as well
来源：https://stackoverflow.com/questions/24766728/response-code-500-when-returning-an-object-using-responsebody