[英]How to use fasterxml Jackson JSON serialization in Spring 4
當我使用以下curl調用它時,為什么我的Spring控制器不返回媒體類型application/json
:
curl -v -i -H "Accept: application/json" localhost:8080/properties-ws/prop/2322
我已經閱讀了有關此主題的所有其他問題和答案,但沒有一個問題涉及我的具體問題。
我正在使用Spring 4,並且有一個簡單的Controller和pom。
控制器方法
@RequestMapping(value="/prop/{character}",
method=RequestMethod.GET,
produces={MediaType.APPLICATION_JSON_VALUE})
public @ResponseBody CharData getData(@PathVariable(value="character") int codePoint) {
CharData chData = null;
chData = CharPropertiesService.getProperties(codePoint);
return chData;
}
POM文件依賴傑克遜
我包括了fastxml jackson-databind工件版本2.3.3
這是pom:
<?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/maven-v4_0_0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.joconner.unicode</groupId>
<version>0.0.1-SNAPSHOT</version>
<name>properties-ws</name>
<artifactId>properties-ws</artifactId>
<packaging>war</packaging>
<properties>
<java-version>1.7</java-version>
<org.springframework-version>4.0.3.RELEASE</org.springframework-version>
<org.aspectj-version>1.6.9</org.aspectj-version>
<org.slf4j-version>1.6.1</org.slf4j-version>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
</properties>
<dependencies>
<dependency>
<groupId>com.joconner.unicode</groupId>
<artifactId>properties</artifactId>
<version>1.0.0-SNAPSHOT</version>
<scope>compile</scope>
</dependency>
<dependency>
<groupId>com.fasterxml.jackson.core</groupId>
<artifactId>jackson-databind</artifactId>
<version>2.3.3</version>
</dependency>
<!-- Testing -->
<dependency>
<groupId>junit</groupId>
<artifactId>junit</artifactId>
<version>4.8.2</version>
<scope>test</scope>
</dependency>
<!-- Logging -->
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-api</artifactId>
<version>${org.slf4j-version}</version>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>jcl-over-slf4j</artifactId>
<version>${org.slf4j-version}</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.slf4j</groupId>
<artifactId>slf4j-log4j12</artifactId>
<version>${org.slf4j-version}</version>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>log4j</groupId>
<artifactId>log4j</artifactId>
<version>1.2.15</version>
<exclusions>
<exclusion>
<groupId>javax.mail</groupId>
<artifactId>mail</artifactId>
</exclusion>
<exclusion>
<groupId>javax.jms</groupId>
<artifactId>jms</artifactId>
</exclusion>
<exclusion>
<groupId>com.sun.jdmk</groupId>
<artifactId>jmxtools</artifactId>
</exclusion>
<exclusion>
<groupId>com.sun.jmx</groupId>
<artifactId>jmxri</artifactId>
</exclusion>
</exclusions>
<scope>runtime</scope>
</dependency>
<!-- Servlet -->
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>servlet-api</artifactId>
<version>2.5</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet.jsp</groupId>
<artifactId>jsp-api</artifactId>
<version>2.1</version>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<!-- Spring Web MVC Features -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-webmvc</artifactId>
<version>${org.springframework-version}</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-test</artifactId>
<version>${org.springframework-version}</version>
</dependency>
<!-- Spring -->
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-context</artifactId>
<version>${org.springframework-version}</version>
<exclusions>
<!-- Exclude Commons Logging in favor of SLF4j -->
<exclusion>
<groupId>commons-logging</groupId>
<artifactId>commons-logging</artifactId>
</exclusion>
</exclusions>
</dependency>
</dependencies>
</project>
控制器返回HTTP響應406,並帶有以下消息:
由該請求標識的資源僅能夠根據請求“接受”報頭生成具有不可接受的特性的響應。
關於我沒有正確配置的任何想法?
感謝Sotirios,我已經解決了我的問題。 我不確定為什么這會解決它,但確實如此。
我只是將以下內容放在我的servlet-context.xml中:
<mvc:annotation-driven/>
而已。 這就是全部,現在Spring返回了我期望的對象的JSON表示。
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