在Java中读取JSON属性

当我从

java

调用postAPI时，我的输出低于

output

。我想将

access\u token

存储在变量中，但我无法这样做。在javascript中，我可以很容易地做到这一点，但在Java中，这对我来说变得越来越困难。有人能帮我吗

{
    "access_token": "eyJ4NXQjUzI1NiI6IjZhYnBycWVsRl9ld3NEaW1HRy0wY0JpNVg2N09jQjkzTGNyN2Y4M3UzLXMiLCJ4NXQiOiJkdlhSRXBGdXpTenRMdGlMM2Vmbk1rbVo0Rk0iLCJraWQiOiJTSUdOSU5HX0tFWSIsImFsZyI6IlJTMjU2In0.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.X8wpGF9h018oWQrzOiTs1ST1rxSPzbAvH2xeFlfcO3vQwBjojsz9orCZZ5eqE834ot_UQc99xLA7JmeYMlv0i1Ud5uWcbP10gLaxKspmZFZFvDsCVTBSBYeG3yuthCUt2AyO1v1wSk25TTYOQfv-8rr8tErBq-it4p6vqNfoaLD91O3OWedl9FE1qbEq7RhIVKhpYryevGGnUJHBPL3FR3Jd7RbrVUPktj2KDLCUR85TauNn5nzEQzyvTlKIVPIUFANi2eD2JHRTcqA9kxRRUApY4qaVc-iqk_4mWrMuOPbS8TwPfZk97bWqov2Sg_KqRTlNffwRtVL9oUsLMMUjag",
    "token_type": "Bearer",
    "expires_in": 3600
}

---

难以将访问令牌存储在变量中是什么意思？根据您编写的内容，我将声明一个字符串变量来保存access_令牌。但我认为你的要求背后还有更多的原因。“我做不到”并不是一个问题的描述：你到底做了什么似乎不起作用的尝试？因为Java中有几个用于解析JSON的库，它们都非常容易通过一次google搜索找到。这是否回答了您的问题@迈克·波马克斯·卡默曼谢谢你，迈克。我确实试过杰克逊，但我犯了个错误。可能我没有包括maven依赖。顺便问一下，你为什么否决这个问题？@mohammedkhan谢谢你Mohammed Khan。这有助于完成要求

   String data="{\"access_token\":\"eyJ4NXQjUzI1NiI6IjZhYnBycWVsRl9ld3NEaW1HRy0wY0JpNVg2N09jQjkzTGNyN2Y4M3UzLXMiLCJ4NXQiOiJkdlhSRXBGdXpTenRMdGlMM2Vmbk1rbVo0Rk0iLCJraWQiOiJTSUdOSU5HX0tFWSIsImFsZyI6IlJTMjU2In0.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.fFtCsQmgrf_jhU_pxa03O8ddP-1vjvOz7ciTqMbY-efeFsH1M17dzA2IAUlKbbg0I-bHHmu-IGBVTCaNwTuR5BaogR4z6ZlN03ojLkvbfstMlLxDqSn51U2v-wXXmF_Y7dypfxGqaDevlrlzJmh3Ve7Bq9AY0jMlwhLlMxLjvcVXGpGoiZ7a96K94rHUSgDf3-rZIy6dkYpTGWOaDV61Xfh3_HO8n85wUHVyqIuVjaeAg-BBModl2kd7oWp93bz9s_PA57d2Pr8yrbq7zxMbCSZ6fT_52_QJ17bAADBMvboXc0dDo1E6M1DgbQSnW80NDkYC_UI2OGFz-_Vg4aaPXw\",\"token_type\":\"Bearer\",\"expires_in\":3600}";
    //assign your JSON String here
   JsonObject obj=Json.parse(data).asObject();
   String accessToken=obj.get("access_token").asString();
     System.out.println(accessToken);