Spring cloud 使用SpringCloud佯装会导致java.lang.NoClassDefFoundError:佯装/Logger

我为假客户端启用了spring云，如下所示：

@Configuration
@EnableAutoConfiguration
@RestController
@EnableEurekaClient
@EnableCircuitBreaker
@EnableFeignClients

public class SpringCloudConfigClientApplication {
}

但是当我添加enablefignclients时，我在编译过程中遇到了这个错误

java.lang.NoClassDefFoundError: feign/Logger
    at java.lang.Class.getDeclaredMethods0(Native Method)
    at java.lang.Class.privateGetDeclaredMethods(Class.java:2688)
    at java.lang.Class.getDeclaredMethods(Class.java:1962)

我的POM是

<parent>
        <groupId>org.springframework.cloud</groupId>
        <artifactId>spring-cloud-starter-parent</artifactId>
        <version>1.0.0.RELEASE</version>
    </parent>

    <properties>
        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
        <start-class>demo.SpringCloudConfigClientApplication</start-class>
        <java.version>1.7</java.version>
    </properties>

    <dependencies>
        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-eureka</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-config-server</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.boot</groupId>
            <artifactId>spring-boot-starter-web</artifactId>
        </dependency>

        <dependency>
            <groupId>org.springframework.cloud</groupId>
            <artifactId>spring-cloud-starter-hystrix</artifactId>
        </dependency>

    </dependencies>

现在当我在URL中检索时，我得到了这个错误

ue Jun 09 15:30:10 PDT 2015
There was an unexpected error (type=Internal Server Error, status=500).
Could not read JSON: No suitable constructor found for type [simple type, class demo.entity.Store]: can not instantiate from JSON object (need to add/enable type information?) at [Source: java.io.PushbackInputStream@7db6c3dc; line: 1, column: 3] (through reference chain: java.util.ArrayList[0]); nested exception is com.fasterxml.jackson.databind.JsonMappingException: No suitable constructor found for type [simple type, class demo.entity.Store]: can not instantiate from JSON object (need to add/enable type information?) at [Source: java.io.PushbackInputStream@7db6c3dc; line: 1, column: 3] (through reference chain: java.util.ArrayList[0])

此处的错误似乎是检索到的列表无法转换为存储类。 所以为了使用FaignClient，我们需要包括任何其他映射程序来将JSON转换为对象吗

---

谢谢

你错过了春云发令假

谢谢你，@spencergib，你说得对。您能告诉我如何从JSON映射到对象吗？似乎佯装客户端没有这样做。你的对象是否有一个公共的无参数构造函数？回答我自己，必须在实体类中放置一个默认的空构造函数才能使映射器工作。谢谢

@FeignClient("store")
public interface StoreClient {
    @RequestMapping(method = RequestMethod.GET, value = "/stores")
    List<Store> getStores();
}

public class Store {

    private long id;
    private String name;
    private String zip;

    public Store(long id, String name, String zip) {
        this.id = id;
        this.name = name;
        this.zip = zip;
    }
}

ue Jun 09 15:30:10 PDT 2015
There was an unexpected error (type=Internal Server Error, status=500).
Could not read JSON: No suitable constructor found for type [simple type, class demo.entity.Store]: can not instantiate from JSON object (need to add/enable type information?) at [Source: java.io.PushbackInputStream@7db6c3dc; line: 1, column: 3] (through reference chain: java.util.ArrayList[0]); nested exception is com.fasterxml.jackson.databind.JsonMappingException: No suitable constructor found for type [simple type, class demo.entity.Store]: can not instantiate from JSON object (need to add/enable type information?) at [Source: java.io.PushbackInputStream@7db6c3dc; line: 1, column: 3] (through reference chain: java.util.ArrayList[0])