{"id":37046,"date":"2024-11-26T09:29:15","date_gmt":"2024-11-26T01:29:15","guid":{"rendered":"https:\/\/fwq.ai\/blog\/37046\/"},"modified":"2024-11-26T09:29:15","modified_gmt":"2024-11-26T01:29:15","slug":"java%e6%80%8e%e4%b9%88%e8%a7%a3%e6%9e%90%e6%95%b0%e7%bb%84json","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/37046\/","title":{"rendered":"java\u600e\u4e48\u89e3\u6790\u6570\u7ec4json"},"content":{"rendered":"

\n \u6709 4 \u79cd\u65b9\u6cd5\u53ef\u7528\u4e8e\u89e3\u6790 java \u4e2d\u7684 json \u6570\u7ec4\uff1a1. \u4f7f\u7528 gson \u5e93\uff1b2. \u4f7f\u7528 jackson \u5e93\uff1b3. \u4f7f\u7528 java \u53cd\u5c04\uff1b4. \u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u3002\n<\/p><\/blockquote>\n

\"java\u600e\u4e48\u89e3\u6790\u6570\u7ec4json\u63d2\u56fe\"<\/p>\n

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

JSON \u6570\u7ec4\u662f\u4e00\u79cd\u6709\u5e8f\u7684\u5143\u7d20\u5217\u8868\uff0c\u5728 Java \u4e2d\u53ef\u4ee5\u4f7f\u7528\u591a\u79cd\u65b9\u6cd5\u8fdb\u884c\u89e3\u6790\u3002<\/p>\n

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

Gson \u662f\u4e00\u4e2a\u6d41\u884c\u7684 JSON \u8f6c\u6362\u5e93\uff0c\u53ef\u4ee5\u7528\u5b83\u8f7b\u677e\u89e3\u6790 JSON \u6570\u7ec4\u3002<\/p>\n

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

import com.google.gson.Gson;\n\n\/\/ JSON \u6570\u7ec4\u5b57\u7b26\u4e32\nString jsonString = \"[1, 2, 3, 4, 5]\";\n\n\/\/ \u521b\u5efa Gson \u5bf9\u8c61\nGson gson = new Gson();\n\n\/\/ \u5c06 JSON \u5b57\u7b26\u4e32\u53cd\u5e8f\u5217\u5316\u4e3a\u6574\u6570\u6570\u7ec4\nint[] numbers = gson.fromJson(jsonString, int[].class);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
2. \u4f7f\u7528 Jackson \u5e93<\/strong><\/p>\n
Jackson \u662f\u53e6\u4e00\u4e2a\u5e7f\u6cdb\u4f7f\u7528\u7684 JSON \u8f6c\u6362\u5e93\uff0c\u4e5f\u652f\u6301\u89e3\u6790 JSON \u6570\u7ec4\u3002<\/p>\n
import com.fasterxml.jackson.databind.ObjectMapper;\n\n\/\/ JSON \u6570\u7ec4\u5b57\u7b26\u4e32\nString jsonString = \"[1, 2, 3, 4, 5]\";\n\n\/\/ \u521b\u5efa ObjectMapper \u5bf9\u8c61\nObjectMapper mapper = new ObjectMapper();\n\n\/\/ \u5c06 JSON \u5b57\u7b26\u4e32\u53cd\u5e8f\u5217\u5316\u4e3a\u6574\u6570\u6570\u7ec4\nint[] numbers = mapper.readValue(jsonString, int[].class);<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
3. \u4f7f\u7528 Java \u53cd\u5c04<\/strong><\/p>\n
\u5bf9\u4e8e\u7b80\u5355\u7684 JSON \u6570\u7ec4\uff0c\u53ef\u4ee5\u4f7f\u7528 Java \u53cd\u5c04\u8fdb\u884c\u89e3\u6790\u3002<\/p>\n
\/\/ JSON \u6570\u7ec4\u5b57\u7b26\u4e32\nString jsonString = \"[1, 2, 3, 4, 5]\";\n\n\/\/ \u4f7f\u7528 Java \u53cd\u5c04\u521b\u5efa\u6570\u7ec4\nint[] numbers = new int[jsonString.length()];\n\n\/\/ \u63d0\u53d6\u6570\u7ec4\u5143\u7d20\u5e76\u8f6c\u6362\u4e3a\u6574\u6570\nfor (int i = 0; i < numbers.length; i++) {\n    numbers[i] = Integer.parseInt(jsonString.substring(i, i + 1));\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
4. \u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f<\/strong><\/p>\n
\u5728\u7279\u6b8a\u60c5\u51b5\u4e0b\uff0c\u53ef\u4ee5\u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u89e3\u6790 JSON \u6570\u7ec4\u3002<\/p>\n
\/\/ JSON \u6570\u7ec4\u5b57\u7b26\u4e32\nString jsonString = \"[1, 2, 3, 4, 5]\";\n\n\/\/ \u6b63\u5219\u8868\u8fbe\u5f0f\u5339\u914d\u6570\u7ec4\u5143\u7d20\nPattern pattern = Pattern.compile(\"\\[(.*?)\\]\");\nMatcher matcher = pattern.matcher(jsonString);\n\n\/\/ \u63d0\u53d6\u5e76\u8f6c\u6362\u4e3a\u6574\u6570\nif (matcher.matches()) {\n    String[] elements = matcher.group(1).split(\",\");\n    int[] numbers = new int[elements.length];\n    for (int i = 0; i < numbers.length; i++) {\n        numbers[i] = Integer.parseInt(elements[i]);\n    }\n}<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u89e3\u6790\u6570\u7ec4json\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8\u7c73\u4e91\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
\u6709 4 \u79cd\u65b9\u6cd5\u53ef\u7528\u4e8e\u89e3\u6790 java \u4e2d\u7684 json \u6570\u7ec4\uff1a1. \u4f7f\u7528 gson \u5e93\uff1b2. \u4f7f\u7528 jackson \u5e93\uff1b3. \u4f7f\u7528 java \u53cd\u5c04\uff1b4. \u4f7f\u7528\u6b63\u5219\u8868\u8fbe\u5f0f\u3002 \u5982\u4f55\u4f7f\u7528 Java \u89e3\u6790 JSON \u6570\u7ec4 JSON \u6570\u7ec4\u662f\u4e00\u79cd\u6709\u5e8f\u7684\u5143\u7d20\u5217\u8868\uff0c\u5728 Java \u4e2d\u53ef\u4ee5\u4f7f\u7528\u591a\u79cd\u65b9\u6cd5\u8fdb\u884c\u89e3\u6790\u3002 1. \u4f7f\u7528 Gson \u5e93 Gson \u662f\u4e00\u4e2a\u6d41\u884c\u7684 JSON \u8f6c\u6362\u5e93\uff0c\u53ef\u4ee5\u7528\u5b83\u8f7b\u677e\u89e3\u6790 JSON \u6570\u7ec4\u3002 \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b import com.google.gson.Gson; \/\/ JSON \u6570\u7ec4\u5b57\u7b26\u4e32 String jsonString = “[1, 2, 3, 4, 5]”; \/\/ \u521b\u5efa Gson \u5bf9\u8c61 Gson […]<\/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-37046","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37046","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=37046"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/37046\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=37046"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=37046"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=37046"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}