出现错误 Java 类 java.util.ArrayList/List<java.lang.String> 的消息正文编写器没有找到
好吧,这已经在这里发布了很多时间,但没有对我有用的解决方案...
我可以通过创建一个包装类来避免这个错误,但它只返回了
well this has been posted a lot of time here but no solution worked for me...
i can avoid this error by making a wrapper class but it only returned
</stringWrapper>
我做错了什么?
StringWrapper 类:
StringWrapper class:
import java.util.ArrayList;
import java.util.List;
import javax.xml.bind.annotation.XmlRootElement;
@XmlRootElement
public class StringWrapper {
public StringWrapper (){}
List<String> list=new ArrayList<String>();
public void add(String s){
list.add(s);
}
}
代码:
@Path("/xml")
@GET
@Produces({MediaType.APPLICATION_XML,MediaType.APPLICATION_JSON})
public StringWrapper mystring(){
StringWrapper thestring=new StringWrapper();
thestring.add("a");
thestring.add("a");
return thestring;
}
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推荐答案
你应该在你的 StringWrapper 中添加至少一个 getter.没有公共属性,就没有什么可序列化的.所以输出是正确的.如果您不想在字符串列表周围添加标签,可以使用 @XmlValue 标记单个 getter.
You should add at least a getter in your StringWrapper. Without public attributes, there is nothing to serialize. So the output is correct. If you do not want a tag around the list of your strings, you can mark a single getter with @XmlValue.
@XmlRootElement
public class StringWrapper {
public StringWrapper (){}
List<String> list=new ArrayList<String>();
public void add(String s) { list.add(s); }
@XmlValue
public List<String> getData() { return list; }
}
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