{"id":65579,"date":"2025-05-03T12:15:37","date_gmt":"2025-05-03T04:15:37","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65579\/"},"modified":"2025-05-03T12:15:37","modified_gmt":"2025-05-03T04:15:37","slug":"java%e6%80%8e%e4%b9%88%e8%a7%a3%e6%9e%90json%e5%af%b9%e8%b1%a1%e6%95%b0%e7%bb%84%e5%af%b9%e8%b1%a1%e6%95%b0%e7%bb%84%e5%af%b9%e8%b1%a1-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65579\/","title":{"rendered":"java\u600e\u4e48\u89e3\u6790json\u5bf9\u8c61\u6570\u7ec4\u5bf9\u8c61\u6570\u7ec4\u5bf9\u8c61"},"content":{"rendered":"

\n \u5982\u4f55\u4f7f\u7528 java \u89e3\u6790 json \u5bf9\u8c61\u6570\u7ec4\uff1a\u521b\u5efa objectmapper \u5b9e\u4f8b\u3002\u5c06 json \u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a jsonnode\u3002\u83b7\u53d6 json \u5bf9\u8c61\u6570\u7ec4\uff08\u5b58\u50a8\u5728 jsonarray \u4e2d\uff09\u3002\u904d\u5386\u6570\u7ec4\uff0c\u5e76\u89e3\u6790\u6bcf\u4e2a\u5bf9\u8c61\uff0c\u63d0\u53d6\u5176\u5c5e\u6027\uff08\u4f7f\u7528 get() \u65b9\u6cd5\uff09\u3002\n<\/p><\/blockquote>\n

\"java\u600e\u4e48\u89e3\u6790json\u5bf9\u8c61\u6570\u7ec4\u5bf9\u8c61\u6570\u7ec4\u5bf9\u8c61\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u4f7f\u7528 Java \u89e3\u6790 JSON \u5bf9\u8c61\u6570\u7ec4<\/strong><\/p>\n

\u7b80\u4ecb<\/strong><\/p>\n

JSON \u5bf9\u8c61\u6570\u7ec4\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u5b83\u5305\u542b\u4e00\u4e2a\u6216\u591a\u4e2a JSON \u5bf9\u8c61\u3002\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u5229\u7528 ObjectMapper \u7c7b\u6765\u89e3\u6790 JSON \u5bf9\u8c61\u6570\u7ec4\u3002<\/p>\n

\u793a\u4f8b JSON<\/strong><\/p>\n

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

[\n  {\n    \"id\": 1,\n    \"name\": \"John Doe\"\n  },\n  {\n    \"id\": 2,\n    \"name\": \"Jane Doe\"\n  }\n]<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u89e3\u6790\u6b65\u9aa4<\/strong><\/p>\n
    \n
  1. \n
    \u521b\u5efa ObjectMapper \u5b9e\u4f8b<\/strong><\/p>\n
    ObjectMapper mapper = new ObjectMapper();<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/li>\n
  2. \n
    \u5c06 JSON \u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a JsonNode<\/strong><\/p>\n
    JsonNode rootNode = mapper.readTree(jsonString);<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/li>\n
  3. \n
    \u83b7\u53d6 JSON \u5bf9\u8c61\u6570\u7ec4<\/strong><\/p>\n
    JSON \u5bf9\u8c61\u6570\u7ec4\u5b58\u50a8\u5728 JsonArray \u4e2d\uff0c\u53ef\u4ee5\u4f7f\u7528 get() \u65b9\u6cd5\u83b7\u53d6\uff1a<\/p>\n
    JsonArray arrayOfObjects = rootNode.get(\"ArrayOfObjects\");<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/li>\n
  4. \n
    \u904d\u5386\u6570\u7ec4\u5e76\u89e3\u6790\u6bcf\u4e2a\u5bf9\u8c61<\/strong><\/p>\n
    \u53ef\u4ee5\u4f7f\u7528 iterator() \u65b9\u6cd5\u904d\u5386\u6570\u7ec4\uff0c\u5e76\u5728\u6bcf\u4e2a\u5bf9\u8c61\u4e0a\u8c03\u7528 get() \u65b9\u6cd5\u6765\u83b7\u53d6\u5176\u5c5e\u6027\uff1a<\/p>\n
    for (JsonNode object : arrayOfObjects) {\n    int id = object.get(\"id\").asInt();\n    String name = object.get(\"name\").asText();\n}<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<\/ol>\n
    \u793a\u4f8b\u4ee3\u7801<\/strong><\/p>\n
    \u4ee5\u4e0b\u793a\u4f8b\u5c55\u793a\u4e86\u5982\u4f55\u89e3\u6790\u4e0a\u9762\u7684 JSON \u5b57\u7b26\u4e32\uff1a<\/p>\n
    import com.fasterxml.jackson.databind.ObjectMapper;\nimport com.fasterxml.jackson.databind.JsonNode;\n\npublic class ParseJsonArray {\n\n    public static void main(String[] args) {\n        String jsonString = \"[...]\"; \/\/ \u66ff\u6362\u4e3a\u5b9e\u9645 JSON \u5b57\u7b26\u4e32\n\n        ObjectMapper mapper = new ObjectMapper();\n        JsonNode rootNode = mapper.readTree(jsonString);\n        JsonArray arrayOfObjects = rootNode.get(\"ArrayOfObjects\");\n\n        for (JsonNode object : arrayOfObjects) {\n            int id = object.get(\"id\").asInt();\n            String name = object.get(\"name\").asText();\n            System.out.println(\"ID: \" + id + \", Name: \" + name);\n        }\n    }\n}<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u89e3\u6790json\u5bf9\u8c61\u6570\u7ec4\u5bf9\u8c61\u6570\u7ec4\u5bf9\u8c61\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
    \u5982\u4f55\u4f7f\u7528 java \u89e3\u6790 json \u5bf9\u8c61\u6570\u7ec4\uff1a\u521b\u5efa objectmapper \u5b9e\u4f8b\u3002\u5c06 json \u5b57\u7b26\u4e32\u8f6c\u6362\u4e3a jsonnode\u3002\u83b7\u53d6 json \u5bf9\u8c61\u6570\u7ec4\uff08\u5b58\u50a8\u5728 jsonarray \u4e2d\uff09\u3002\u904d\u5386\u6570\u7ec4\uff0c\u5e76\u89e3\u6790\u6bcf\u4e2a\u5bf9\u8c61\uff0c\u63d0\u53d6\u5176\u5c5e\u6027\uff08\u4f7f\u7528 get() \u65b9\u6cd5\uff09\u3002 \u5982\u4f55\u4f7f\u7528 Java \u89e3\u6790 JSON \u5bf9\u8c61\u6570\u7ec4 \u7b80\u4ecb JSON \u5bf9\u8c61\u6570\u7ec4\u662f\u4e00\u79cd\u6570\u636e\u7ed3\u6784\uff0c\u5b83\u5305\u542b\u4e00\u4e2a\u6216\u591a\u4e2a JSON \u5bf9\u8c61\u3002\u5728 Java \u4e2d\uff0c\u53ef\u4ee5\u5229\u7528 ObjectMapper \u7c7b\u6765\u89e3\u6790 JSON \u5bf9\u8c61\u6570\u7ec4\u3002 \u793a\u4f8b JSON \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b [ { “id”: 1, “name”: “John Doe” }, { “id”: 2, “name”: “Jane Doe” } ] \u767b\u5f55\u540e\u590d\u5236 \u89e3\u6790\u6b65\u9aa4 \u521b\u5efa ObjectMapper […]<\/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-65579","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65579","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=65579"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65579\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65579"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65579"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65579"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}