java - 如何将字符串 REST 与 JPA 连接？

Question

我正在遵循 http://spring.io/guides/gs/accessing-data-rest/ 上的指南，这就像这个的 hello world...GET 请求工作完美，但是在尝试 POST 时，他们建议(我正在使用 Rest Client Chrome 扩展)，使用 json

{ "firstName" : "Frodo", "lastName" : "Baggins" } 

我收到以下错误:

{
    cause: {
        cause: null
        message: "Unrecognized token 'firstName': was expecting 'null', 'true', 'false' or NaN at [Source: org.apache.catalina.connector.CoyoteInputStream@29508db1; line: 1, column: 11]"
    }
    message: "Could not read JSON: Unrecognized token 'firstName': was expecting 'null', 'true', 'false' or NaN at [Source: org.apache.catalina.connector.CoyoteInputStream@29508db1; line: 1, column: 11]; nested exception is com.fasterxml.jackson.core.JsonParseException: Unrecognized token 'firstName': was expecting 'null', 'true', 'false' or NaN at [Source: org.apache.catalina.connector.CoyoteInputStream@29508db1; line: 1, column: 11]"
}

我该如何解决这个问题？为什么会发生这种情况？

Answer 1

发送请求时尝试验证是否有 Content-Type:application/json