javax.ws.rs.ProcessingException：找不到内容类型application / json的writer

时间：2016-02-10 10:35:52

标签： java web-services rest jboss resteasy

我是REST网络服务的新手。我正在尝试@post和@consumes注释，如下所示

@POST
@Path("/post")
@Consumes("application/json")
public Response createProductInJSON(Product product) {
    String result = "Product created : " + product;
    return Response.status(201).entity(result).build();
}

修改 产品类

public class Product {
    String name;
    int qty;

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public int getQty() {
        return qty;
    }

    public void setQty(int qty) {
        this.qty = qty;
    }
}

现在我想测试一下，所以使用下面的代码进行测试。

Product product=new Product();
    product.setName("windows_phone");
    product.setQty(4);

    ResteasyClient client = new ResteasyClientBuilder().build();
    ResteasyWebTarget target = client.target("http://localhost:8080/Rest_Services/practice/service/post");

    Response response = target.request().post(Entity.entity(product, "application/json"));

    if (response.getStatus() != 200) {
        throw new RuntimeException("Failed : HTTP error code : "+ response.getStatus());
    }

    System.out.println("Server response : \n");
    System.out.println(response.readEntity(String.class));
    response.close();

执行时遇到以下错误。 

log4j:WARN No appenders could be found for logger (org.jboss.resteasy.plugins.providers.DocumentProvider).
log4j:WARN Please initialize the log4j system properly.
Exception in thread "main" javax.ws.rs.ProcessingException: Unable to invoke request
at org.jboss.resteasy.client.jaxrs.engines.ApacheHttpClient4Engine.invoke(ApacheHttpClient4Engine.java:287)

Caused by: javax.ws.rs.ProcessingException: could not find writer for content-type application/json type: com.model.Product
at org.jboss.resteasy.core.interception.ClientWriterInterceptorContext.throwWriterNotFoundException(ClientWriterInterceptorContext.java:40)
at org.jboss.resteasy.core.interception.AbstractWriterInterceptorContext.getWriter(AbstractWriterInterceptorContext.java:138)

以下是正在使用的罐子。

enter image description here

编辑3 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>rest_maven</groupId>
<artifactId>rest_maven</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>war</packaging>
<build>
<sourceDirectory>src</sourceDirectory>
<plugins>
  <plugin>
    <artifactId>maven-compiler-plugin</artifactId>
    <version>3.0</version>
    <configuration>
      <source>1.7</source>
      <target>1.7</target>
    </configuration>
  </plugin>
  <plugin>
    <artifactId>maven-war-plugin</artifactId>
    <version>2.3</version>
    <configuration>
      <warSourceDirectory>WebContent</warSourceDirectory>
      <failOnMissingWebXml>false</failOnMissingWebXml>
    </configuration>
  </plugin>
</plugins>
</build>
<dependencies>
    <dependency>
        <groupId>org.glassfish.jersey.core</groupId>
        <artifactId>jersey-server</artifactId>
        <version>2.6</version>
    </dependency>
    <dependency>
        <groupId>org.glassfish.jersey.containers</groupId>
        <artifactId>jersey-container-servlet-core</artifactId>
        <version>2.6</version>
    </dependency>
    <dependency>
        <groupId>org.slf4j</groupId>
        <artifactId>slf4j-log4j12</artifactId>
        <version>1.5.6</version>
    </dependency>
    <dependency>
        <groupId>com.google.code.gson</groupId>
        <artifactId>gson</artifactId>
        <version>2.3.1</version>
    </dependency>
    <dependency>
        <groupId>commons-logging</groupId>
        <artifactId>commons-logging</artifactId>
        <version>1.1.3</version>
    </dependency>
    <dependency>
        <groupId>commons-io</groupId>
        <artifactId>commons-io</artifactId>
        <version>2.2</version>
    </dependency>
    <dependency>
        <groupId>commons-codec</groupId>
        <artifactId>commons-codec</artifactId>
        <version>1.9</version>
    </dependency>
    <dependency>
        <groupId>javax.activation</groupId>
        <artifactId>activation</artifactId>
        <version>1.1.1</version>
    </dependency>
    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpclient</artifactId>
        <version>4.3.6</version>
    </dependency>
    <dependency>
        <groupId>org.apache.httpcomponents</groupId>
        <artifactId>httpcore</artifactId>
        <version>4.3.3</version>
    </dependency>
    <dependency>
        <groupId>org.jboss.spec.javax.annotation</groupId>
        <artifactId>jboss-annotations-api_1.1_spec</artifactId>
        <version>1.0.1.Final</version>
    </dependency>
    <dependency>
        <groupId>net.jcip</groupId>
        <artifactId>jcip-annotations</artifactId>
        <version>1.0</version>
    </dependency>
    <dependency>
        <groupId>log4j</groupId>
        <artifactId>log4j</artifactId>
        <version>1.2.14</version>
    </dependency>
    <dependency>
        <groupId>org.glassfish.jersey.media</groupId>
        <artifactId>jersey-media-moxy</artifactId>
        <version>2.6</version>
    </dependency>
    <dependency>
        <groupId>org.jboss.resteasy</groupId>
        <artifactId>resteasy-client</artifactId>
        <version>3.0.12.Final</version>
    </dependency>
    <dependency>
        <groupId>org.jboss.resteasy</groupId>
        <artifactId>resteasy-jaxrs</artifactId>
        <version>3.0.12.Final</version>
    </dependency>
    <dependency>
        <groupId>org.jboss.resteasy</groupId>
        <artifactId>jaxrs-api</artifactId>
        <version>3.0.12.Final</version>
    </dependency>
    <dependency>
        <groupId>org.jboss.resteasy</groupId>
        <artifactId>resteasy-jaxb-provider</artifactId>
        <version>3.0.12.Final</version>
    </dependency>
    <dependency>
        <groupId>org.jboss.resteasy</groupId>
        <artifactId>resteasy-jackson2-provider</artifactId>
        <version>3.0.12.Final</version>
    </dependency>
</dependencies>
</project>

的settings.xml 

<settings>
<localRepository>Z:\PROD_Deploy\mvn\repository</localRepository>

<proxies>
<proxy>
  <active>true</active>
  <protocol>http</protocol>
  <username>xxx</username>
  <password>xxx</password>
  <host>xxx</host>
  <port>80</port>
  <nonProxyHosts>local.net|some.host.com</nonProxyHosts>
</proxy>

请帮我解决此错误。 提前谢谢。

2 个答案:

答案 0 :(得分：2)

所以，在查看JBoss文档之后，我想我已经找到了你的问题：

您使用的function IsSubGroupNeeded() { var Subgrp = document.getElementById('myCheck').checked; if (Subgrp === true) { loadgrdSubgroupItem(); } }; 取决于resteasy-client-3.0.4.Final，如here所述。

现在问题是，在resteasy-jaxrs-3.0.4.Final上，resteasy-jaxrs-3.0.4.Final班的different hierarchy比CaseInsensitiveMap<V>的{​​{3}}。

我建议您升级版本为one的resteasy-jaxrs-3.0.12.Final。

修改

您的resteasy-client应该包含这些依赖项。验证您不拥有哪些内容并更新您的Maven项目：

pom.xml

答案 1 :(得分：0)

首先你需要了解什么是NoSuchMethodError？我相信你一定要阅读这些文件。它基本上在运行时其他一些类在你从jar使用的类之前加载。因此，我建议您先检查使用该方法的类，然后再检查类是否正确编译了类路径。

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