{"id":66573,"date":"2025-05-03T17:16:30","date_gmt":"2025-05-03T09:16:30","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66573\/"},"modified":"2025-05-03T17:16:30","modified_gmt":"2025-05-03T09:16:30","slug":"java%e6%80%8e%e4%b9%88%e9%81%8d%e5%8e%86json%e6%95%b0%e7%bb%84%e5%af%b9%e8%b1%a1%e7%9a%84%e5%b1%9e%e6%80%a7-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66573\/","title":{"rendered":"java\u600e\u4e48\u904d\u5386json\u6570\u7ec4\u5bf9\u8c61\u7684\u5c5e\u6027"},"content":{"rendered":"

\n java\u4e2d\u904d\u5386json\u6570\u7ec4\u5bf9\u8c61\u7684\u5c5e\u6027\u6709\u4e09\u79cd\u4e3b\u8981\u65b9\u6cd5\uff1a\u4f7f\u7528jackson\u5e93\uff1a\u4f7f\u7528objectmapper\u89e3\u6790json\u5e76\u8bbf\u95eejsonnode\u7684\u5b57\u6bb5\u3002\u4f7f\u7528gson\u5e93\uff1a\u5c06json\u8f6c\u6362\u4e3ajsonarray\u5e76\u8fed\u4ee3\u5176\u4e2d\u7684\u5143\u7d20\u3002\u4f7f\u7528\u539f\u751fjava\u65b9\u6cd5\uff08java 9\u53ca\u66f4\u9ad8\u7248\u672c\uff09\uff1a\u4f7f\u7528jsonparser\u89e3\u6790json\u5e76\u8bbf\u95eejsonarray\u4e2d\u7684\u5143\u7d20\u3002\n<\/p><\/blockquote>\n

\"java\u600e\u4e48\u904d\u5386json\u6570\u7ec4\u5bf9\u8c61\u7684\u5c5e\u6027\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u904d\u5386 JSON \u6570\u7ec4\u5bf9\u8c61\u7684\u5c5e\u6027<\/strong><\/p>\n

Java \u4e2d\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u904d\u5386 JSON \u6570\u7ec4\u5bf9\u8c61\u7684\u5c5e\u6027\uff1a<\/p>\n

\u4f7f\u7528 Jackson \u5e93<\/strong><\/p>\n

Jackson \u662f\u4e00\u4e2a\u6d41\u884c\u7684 Java JSON \u89e3\u6790\u5e93\uff0c\u5b83\u63d0\u4f9b\u4e86\u65b9\u4fbf\u7684\u65b9\u6cd5\u6765\u904d\u5386 JSON \u6570\u636e\u3002\u8981\u904d\u5386 JSON \u6570\u7ec4\u5bf9\u8c61\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n

\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n

    \n
  1. \u4f7f\u7528 ObjectMapper \u7c7b\u89e3\u6790 JSON \u5b57\u7b26\u4e32\u3002<\/li>\n
  2. \u5c06\u89e3\u6790\u540e\u7684 JSON \u5bf9\u8c61\u8f6c\u6362\u4e3a JsonNode\u3002<\/li>\n
  3. \u8fed\u4ee3 JsonNode \u7684\u5b57\u6bb5\u3002<\/li>\n<\/ol>\n
    import com.fasterxml.jackson.databind.ObjectMapper;\nimport com.fasterxml.jackson.databind.JsonNode;\n\n...\n\nObjectMapper mapper = new ObjectMapper();\nJsonNode rootNode = mapper.readTree(json);\n\nJsonNode arrayNode = rootNode.path(\"array\");\narrayNode.forEach(node -> {\n  System.out.println(node.path(\"name\").asText());\n  System.out.println(node.path(\"age\").asInt());\n});<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u4f7f\u7528 GSON \u5e93<\/strong><\/p>\n
    GSON \u662f\u53e6\u4e00\u4e2a\u6d41\u884c\u7684 Java JSON \u89e3\u6790\u5e93\u3002\u8981\u904d\u5386 JSON \u6570\u7ec4\u5bf9\u8c61\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n
      \n
    1. \u4f7f\u7528 Gson \u7c7b\u89e3\u6790 JSON \u5b57\u7b26\u4e32\u3002<\/li>\n
    2. \u5c06\u89e3\u6790\u540e\u7684 JSON \u5bf9\u8c61\u8f6c\u6362\u4e3a JsonArray\u3002<\/li>\n
    3. \u8fed\u4ee3 JsonArray \u4e2d\u7684\u5143\u7d20\u3002<\/li>\n<\/ol>\n
      import com.google.gson.Gson;\nimport com.google.gson.JsonArray;\n\n...\n\nGson gson = new Gson();\nJsonArray array = gson.fromJson(json, JsonArray.class);\n\nfor (JsonElement element : array) {\n  JsonObject object = element.getAsJsonObject();\n  System.out.println(object.get(\"name\").getAsString());\n  System.out.println(object.get(\"age\").getAsInt());\n}<\/pre>\n
       \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
      \u4f7f\u7528\u539f\u751f Java \u65b9\u6cd5<\/strong><\/p>\n
      \u5728 Java 9 \u53ca\u66f4\u9ad8\u7248\u672c\u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528\u539f\u751f Java \u65b9\u6cd5\u6765\u89e3\u6790 JSON \u6570\u636e\u3002\u8981\u904d\u5386 JSON \u6570\u7ec4\u5bf9\u8c61\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n
        \n
      1. \u4f7f\u7528 JsonParser \u7c7b\u89e3\u6790 JSON \u5b57\u7b26\u4e32\u3002<\/li>\n
      2. \u5c06\u89e3\u6790\u540e\u7684 JSON \u5bf9\u8c61\u8f6c\u6362\u4e3a JsonArray\u3002<\/li>\n
      3. \u8fed\u4ee3 JsonArray \u4e2d\u7684\u5143\u7d20\u3002<\/li>\n<\/ol>\n
        import java.util.stream.Stream;\n\n...\n\nJsonParser parser = new JsonParser();\nJsonArray array = parser.parse(json).getAsJsonArray();\n\nStream.of(array)\n  .forEach(element -> {\n    JsonObject object = element.getAsJsonObject();\n    System.out.println(object.get(\"name\").getAsString());\n    System.out.println(object.get(\"age\").getAsInt());\n  });<\/pre>\n
         \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
        \u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u904d\u5386\u5bf9\u8c61\u7684\u5c5e\u6027\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
        java\u4e2d\u904d\u5386json\u6570\u7ec4\u5bf9\u8c61\u7684\u5c5e\u6027\u6709\u4e09\u79cd\u4e3b\u8981\u65b9\u6cd5\uff1a\u4f7f\u7528jackson\u5e93\uff1a\u4f7f\u7528objectmapper\u89e3\u6790json\u5e76\u8bbf\u95eejsonnode\u7684\u5b57\u6bb5\u3002\u4f7f\u7528gson\u5e93\uff1a\u5c06json\u8f6c\u6362\u4e3ajsonarray\u5e76\u8fed\u4ee3\u5176\u4e2d\u7684\u5143\u7d20\u3002\u4f7f\u7528\u539f\u751fjava\u65b9\u6cd5\uff08java 9\u53ca\u66f4\u9ad8\u7248\u672c\uff09\uff1a\u4f7f\u7528jsonparser\u89e3\u6790json\u5e76\u8bbf\u95eejsonarray\u4e2d\u7684\u5143\u7d20\u3002 \u5982\u4f55\u904d\u5386 JSON \u6570\u7ec4\u5bf9\u8c61\u7684\u5c5e\u6027 Java \u4e2d\u6709\u51e0\u79cd\u65b9\u6cd5\u53ef\u4ee5\u904d\u5386 JSON \u6570\u7ec4\u5bf9\u8c61\u7684\u5c5e\u6027\uff1a \u4f7f\u7528 Jackson \u5e93 Jackson \u662f\u4e00\u4e2a\u6d41\u884c\u7684 Java JSON \u89e3\u6790\u5e93\uff0c\u5b83\u63d0\u4f9b\u4e86\u65b9\u4fbf\u7684\u65b9\u6cd5\u6765\u904d\u5386 JSON \u6570\u636e\u3002\u8981\u904d\u5386 JSON \u6570\u7ec4\u5bf9\u8c61\uff0c\u53ef\u4ee5\u4f7f\u7528\u4ee5\u4e0b\u6b65\u9aa4\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u4f7f\u7528 ObjectMapper \u7c7b\u89e3\u6790 JSON \u5b57\u7b26\u4e32\u3002 \u5c06\u89e3\u6790\u540e\u7684 JSON \u5bf9\u8c61\u8f6c\u6362\u4e3a JsonNode\u3002 \u8fed\u4ee3 JsonNode \u7684\u5b57\u6bb5\u3002 import com.fasterxml.jackson.databind.ObjectMapper; import com.fasterxml.jackson.databind.JsonNode; … ObjectMapper mapper = new ObjectMapper(); JsonNode rootNode = mapper.readTree(json); JsonNode arrayNode = rootNode.path(“array”); arrayNode.forEach(node -> { […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[16],"tags":[],"class_list":["post-66573","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66573","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/comments?post=66573"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66573\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66573"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66573"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66573"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}