{"id":65757,"date":"2025-05-03T15:20:21","date_gmt":"2025-05-03T07:20:21","guid":{"rendered":"https:\/\/fwq.ai\/blog\/65757\/"},"modified":"2025-05-03T15:20:21","modified_gmt":"2025-05-03T07:20:21","slug":"java%e6%80%8e%e4%b9%88%e5%8f%96json%e4%b8%ad%e6%95%b0%e7%bb%84-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/65757\/","title":{"rendered":"java\u600e\u4e48\u53d6json\u4e2d\u6570\u7ec4"},"content":{"rendered":"

\n \u4ece json \u6570\u7ec4\u4e2d\u83b7\u53d6\u6570\u636e\u7684\u65b9\u6cd5\u5305\u62ec\uff1a\u4f7f\u7528\u6620\u5c04\u5e93\uff08\u5982 jackson \u6216 gson\uff09\uff0c\u4f8b\u5982\u4f7f\u7528 jackson \u83b7\u53d6\u7b2c\u4e00\u4e2a\u5143\u7d20\uff1astring firstelement = array.get(0).astext();\u4f7f\u7528\u6d41 api\uff0c\u4f8b\u5982\u4f7f\u7528 stream stream = jsonnodefactory.instance.arraynode().elements();\u624b\u5de5\u89e3\u6790\uff0c\u4f8b\u5982\u4f7f\u7528 string[] elements = jsonstring\n<\/p><\/blockquote>\n

\"java\u600e\u4e48\u53d6json\u4e2d\u6570\u7ec4\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u4ece JSON \u6570\u7ec4\u4e2d\u83b7\u53d6\u6570\u636e<\/strong><\/p>\n

\u4ece JSON \u6570\u7ec4\u4e2d\u83b7\u53d6\u6570\u636e\u7684\u65b9\u6cd5\u4e3b\u8981\u6709\u4ee5\u4e0b\u51e0\u79cd\uff1a<\/p>\n

1. \u4f7f\u7528\u6620\u5c04\u5e93<\/strong><\/p>\n

\u53ef\u4ee5\u4f7f\u7528\u5982 Jackson \u6216 GSON \u7b49\u6620\u5c04\u5e93\u6765\u89e3\u6790 JSON \u6570\u636e\u3002\u8fd9\u4e9b\u5e93\u63d0\u4f9b\u4e86\u4fbf\u6377\u7684\u65b9\u6cd5\u6765\u83b7\u53d6\u6570\u7ec4\u4e2d\u7684\u6570\u636e\u3002<\/p>\n

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

\u4f8b\u5982\uff0c\u4f7f\u7528 Jackson\uff1a<\/p>\n

import com.fasterxml.jackson.databind.ObjectMapper;\n\n\/\/ ...\n\nObjectMapper mapper = new ObjectMapper();\nJsonNode root = mapper.readTree(jsonString);\nJsonArray array = root.get(\"array\");\n\/\/ \u83b7\u53d6\u6570\u7ec4\u4e2d\u7684\u7b2c\u4e00\u4e2a\u5143\u7d20\nString firstElement = array.get(0).asText();<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
2. \u4f7f\u7528\u6d41 API<\/strong><\/p>\n
Java 8 \u53ca\u66f4\u9ad8\u7248\u672c\u63d0\u4f9b\u4e86\u6d41 API\uff0c\u53ef\u4ee5\u7528\u6765\u89e3\u6790 JSON \u6570\u636e\u3002<\/p>\n
\u4f8b\u5982\uff1a<\/p>\n
import java.util.stream.Stream;\n\n\/\/ ...\n\nStream<JsonNode> stream = JsonNodeFactory.instance.arrayNode().elements();\n\/\/ ...<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
3. \u4f7f\u7528\u624b\u5de5\u89e3\u6790<\/strong><\/p>\n
\u5982\u679c JSON \u6570\u636e\u7684\u7ed3\u6784\u6bd4\u8f83\u7b80\u5355\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528\u624b\u5de5\u89e3\u6790\u7684\u65b9\u6cd5\u3002<\/p>\n
\u4f8b\u5982\uff0c\u5982\u679c JSON \u6570\u7ec4\u662f\u4e00\u4e2a\uff1a<\/p>\n
String jsonString = \"[ \"element1\", \"element2\", \"element3\" ]\";\n\n\/\/ \u4f7f\u7528\u6d41 API\nStream<String> stream = Stream.of(jsonString.substring(1, jsonString.length() - 1).split(\",\"));\n\n\/\/ \u4f7f\u7528\u624b\u5de5\u89e3\u6790\nString[] elements = jsonString.substring(1, jsonString.length() - 1).split(\",\");<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u53d6json\u4e2d\u6570\u7ec4\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u4ece json \u6570\u7ec4\u4e2d\u83b7\u53d6\u6570\u636e\u7684\u65b9\u6cd5\u5305\u62ec\uff1a\u4f7f\u7528\u6620\u5c04\u5e93\uff08\u5982 jackson \u6216 gson\uff09\uff0c\u4f8b\u5982\u4f7f\u7528 jackson \u83b7\u53d6\u7b2c\u4e00\u4e2a\u5143\u7d20\uff1astring firstelement = array.get(0).astext();\u4f7f\u7528\u6d41 api\uff0c\u4f8b\u5982\u4f7f\u7528 stream stream = jsonnodefactory.instance.arraynode().elements();\u624b\u5de5\u89e3\u6790\uff0c\u4f8b\u5982\u4f7f\u7528 string[] elements = jsonstring \u5982\u4f55\u4ece JSON \u6570\u7ec4\u4e2d\u83b7\u53d6\u6570\u636e \u4ece JSON \u6570\u7ec4\u4e2d\u83b7\u53d6\u6570\u636e\u7684\u65b9\u6cd5\u4e3b\u8981\u6709\u4ee5\u4e0b\u51e0\u79cd\uff1a 1. \u4f7f\u7528\u6620\u5c04\u5e93 \u53ef\u4ee5\u4f7f\u7528\u5982 Jackson \u6216 GSON \u7b49\u6620\u5c04\u5e93\u6765\u89e3\u6790 JSON \u6570\u636e\u3002\u8fd9\u4e9b\u5e93\u63d0\u4f9b\u4e86\u4fbf\u6377\u7684\u65b9\u6cd5\u6765\u83b7\u53d6\u6570\u7ec4\u4e2d\u7684\u6570\u636e\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b \u4f8b\u5982\uff0c\u4f7f\u7528 Jackson\uff1a import com.fasterxml.jackson.databind.ObjectMapper; \/\/ … ObjectMapper mapper = new ObjectMapper(); JsonNode root = mapper.readTree(jsonString); JsonArray array = root.get(“array”); […]<\/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-65757","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65757","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=65757"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/65757\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=65757"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=65757"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=65757"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}