java - 无法使用 gson.fromJson 反序列化对象

Question

我正在尝试使用 gson.fromJson 反序列化由 postman 发送的对象。

 @POST
    @Path( "company" ) // takes name as a path parameter
    @Produces( "application/json" ) // response formatted as JSON
    public Response insertCompany(String content) {
        Gson gson = new Gson();
        CompanyWithNoIdReturn newCompany = gson.fromJson(content,  CompanyWithNoIdReturn.class);
   }

public class CompanyWithNoIdReturn {

     private final String name;
     private final String description;
     private final String logo;

    public CompanyWithNoIdReturn(String name, String description, String logo) 
    {
        this.name = name;
        this.description = description;
        this.logo = logo;
    }

    public String getName() {

        return name;
    }

    public String getDescription() {

        return description;
    }

    public String getLogo() {

        return logo;
    }

}

出现的错误是:javax.servlet.ServletException:

com.google.gson.JsonSyntaxException: java.lang.IllegalStateException: Expected BEGIN_OBJECT but was STRING at line 1 column 1

我知道这意味着它希望以 { 开头，而不是 here 中提到的 " 开头。虽然我不明白的是如何解决它？

json 的构造如下:

编辑:使用表单-数据时，内容如下:

content = (java.lang.String) "------WebKitFormBoundaryUG5yy1gW9G2V5qcz
Content-Disposition: form-data; name="CompanyName"

newCompanyName2
------WebKitFormBoundaryUG5yy1gW9G2V5qcz
Content-Disposition: form-data; name="Description"

newDescription2
------WebKitFormBoundaryUG5yy1gW9G2V5qcz
Content-Disposition: form-data; name="logo"

newLogo2
------WebKitFormBoundaryUG5yy1gW9G2V5qcz--
"

Answer 1

我认为您期望 JSON 格式的正文(内容变量)。但根据您的 postman 图像，您正在发送表单数据。

尝试切换到 raw 并插入以下内容:

{
    "name": "Company name",
    "description": "Company description",
    "logo": "logo"
}