{"id":64341,"date":"2025-05-03T17:59:58","date_gmt":"2025-05-03T09:59:58","guid":{"rendered":"https:\/\/fwq.ai\/blog\/64341\/"},"modified":"2025-05-03T17:59:58","modified_gmt":"2025-05-03T09:59:58","slug":"java%e6%80%8e%e4%b9%88%e5%b0%86%e6%95%b0%e7%bb%84%e8%bd%ac%e6%8d%a2%e4%b8%ba%e5%ad%97%e7%ac%a6%e4%b8%b2-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/64341\/","title":{"rendered":"java\u600e\u4e48\u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32"},"content":{"rendered":"

\n \u5c06 java \u6570\u7ec4\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u7684\u65b9\u6cd5\u53d6\u51b3\u4e8e\u6570\u7ec4\u7c7b\u578b\uff1a\u57fa\u672c\u7c7b\u578b\u6570\u7ec4\uff1a\u4f7f\u7528 arrays.tostring()\u5bf9\u8c61\u6570\u7ec4\uff1a\u4f7f\u7528\u5faa\u73af\u904d\u5386\u5e76\u62fc\u63a5\u6bcf\u4e2a\u5143\u7d20\u81ea\u5b9a\u4e49\u5206\u9694\u7b26\uff1a\u4f7f\u7528 string.join()\u6307\u5b9a\u683c\u5f0f\uff1a\u4f7f\u7528 json \u6216 xml \u5e93\n<\/p><\/blockquote>\n

\"java\u600e\u4e48\u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u5c06 Java \u6570\u7ec4\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32<\/strong><\/p>\n

\u5c06 Java \u6570\u7ec4\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u7684\u65b9\u6cd5\u6709\u5f88\u591a\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u8981\u8f6c\u6362\u7684\u6570\u7ec4\u7c7b\u578b\u548c\u6240\u9700\u7684\u5b57\u7b26\u4e32\u683c\u5f0f\u3002<\/p>\n

\u57fa\u672c\u7c7b\u578b\u6570\u7ec4<\/h3>\n

\u5bf9\u4e8e\u57fa\u672c\u7c7b\u578b\u6570\u7ec4\uff0c\u5982 int[]\u3001float[] \u7b49\uff0c\u53ef\u4ee5\u4f7f\u7528 Arrays.toString() \u65b9\u6cd5\u76f4\u63a5\u5c06\u5176\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\uff1a<\/p>\n

int[] arr = {1, 2, 3, 4, 5};\nString str = Arrays.toString(arr);  \/\/ \u8f93\u51fa: \"[1, 2, 3, 4, 5]\"<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u5bf9\u8c61\u6570\u7ec4<\/h3>\n
\u5bf9\u4e8e\u5bf9\u8c61\u6570\u7ec4\uff0c\u9700\u8981\u4f7f\u7528\u5faa\u73af\u904d\u5386\u6570\u7ec4\uff0c\u5c06\u6bcf\u4e2a\u5143\u7d20\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u5e76\u8fde\u63a5\u8d77\u6765\uff1a<\/p>\n
\u7acb\u5373\u5b66\u4e60<\/span>\u201c\u201d\uff1b<\/p>\n
String[] arr = {\"a\", \"b\", \"c\", \"d\", \"e\"};\nStringBuilder sb = new StringBuilder();\nfor (String s : arr) {\n    sb.append(s).append(\", \");\n}\nString str = sb.deleteCharAt(sb.length() - 2).toString();  \/\/ \u8f93\u51fa: \"a, b, c, d, e\"<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u81ea\u5b9a\u4e49\u5206\u9694\u7b26<\/h3>\n
\u5982\u679c\u9700\u8981\u4f7f\u7528\u81ea\u5b9a\u4e49\u5206\u9694\u7b26\uff0c\u53ef\u4ee5\u4f7f\u7528 String.join() \u65b9\u6cd5\uff1a<\/p>\n
int[] arr = {1, 2, 3, 4, 5};\nString str = String.join(\",\", Arrays.toString(arr));  \/\/ \u8f93\u51fa: \"1,2,3,4,5\"<\/pre>\n
 \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
\u6307\u5b9a\u683c\u5f0f<\/h3>\n
\u5982\u679c\u9700\u8981\u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a\u7279\u5b9a\u683c\u5f0f\u7684\u5b57\u7b26\u4e32\uff0c\u5982 JSON \u6216 XML\uff0c\u53ef\u4ee5\u4f7f\u7528\u4e13\u95e8\u7684\u5e93\u6216\u65b9\u6cd5\uff1a<\/p>\n
    \n
  •  JSON\uff1a<\/strong>\u4f7f\u7528 Gson \u6216 Jackson \u7b49 JSON \u5e93<\/li>\n
  •  XML\uff1a<\/strong>\u4f7f\u7528 JAXB \u6216 DOM4J \u7b49 XML \u5e93<\/li>\n<\/ul>\n
    \u989d\u5916\u63d0\u793a<\/h3>\n
      \n
    • Arrays.toString() \u65b9\u6cd5\u8fd4\u56de\u7684\u5b57\u7b26\u4e32\u5305\u542b\u65b9\u62ec\u53f7 ([])\uff0c\u53ef\u4ee5\u6839\u636e\u9700\u8981\u8fdb\u884c\u5220\u9664\u3002<\/li>\n
    • \u5982\u679c\u6570\u7ec4\u4e2d\u5305\u542b null \u503c\uff0cArrays.toString() \u5c06\u5176\u8868\u793a\u4e3a “null”\u3002<\/li>\n
    • \u5bf9\u4e8e\u5927\u578b\u6570\u7ec4\uff0c\u4f7f\u7528 StringBuilder \u8fde\u63a5\u5b57\u7b26\u4e32\u6bd4\u4f7f\u7528 + \u8fd0\u7b97\u7b26\u66f4\u6709\u6548\u3002<\/li>\n<\/ul>\n
      \u4ee5\u4e0a\u5c31\u662fjava\u600e\u4e48\u5c06\u6570\u7ec4\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u7684\u8be6\u7ec6\u5185\u5bb9\uff0c\u66f4\u591a\u8bf7\u5173\u6ce8IDCBABY\u5176\u5b83\u76f8\u5173\u6587\u7ae0\uff01<\/p>\n","protected":false},"excerpt":{"rendered":"
      \u5c06 java \u6570\u7ec4\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u7684\u65b9\u6cd5\u53d6\u51b3\u4e8e\u6570\u7ec4\u7c7b\u578b\uff1a\u57fa\u672c\u7c7b\u578b\u6570\u7ec4\uff1a\u4f7f\u7528 arrays.tostring()\u5bf9\u8c61\u6570\u7ec4\uff1a\u4f7f\u7528\u5faa\u73af\u904d\u5386\u5e76\u62fc\u63a5\u6bcf\u4e2a\u5143\u7d20\u81ea\u5b9a\u4e49\u5206\u9694\u7b26\uff1a\u4f7f\u7528 string.join()\u6307\u5b9a\u683c\u5f0f\uff1a\u4f7f\u7528 json \u6216 xml \u5e93 \u5982\u4f55\u5c06 Java \u6570\u7ec4\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32 \u5c06 Java \u6570\u7ec4\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u7684\u65b9\u6cd5\u6709\u5f88\u591a\uff0c\u5177\u4f53\u53d6\u51b3\u4e8e\u8981\u8f6c\u6362\u7684\u6570\u7ec4\u7c7b\u578b\u548c\u6240\u9700\u7684\u5b57\u7b26\u4e32\u683c\u5f0f\u3002 \u57fa\u672c\u7c7b\u578b\u6570\u7ec4 \u5bf9\u4e8e\u57fa\u672c\u7c7b\u578b\u6570\u7ec4\uff0c\u5982 int[]\u3001float[] \u7b49\uff0c\u53ef\u4ee5\u4f7f\u7528 Arrays.toString() \u65b9\u6cd5\u76f4\u63a5\u5c06\u5176\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\uff1a int[] arr = {1, 2, 3, 4, 5}; String str = Arrays.toString(arr); \/\/ \u8f93\u51fa: “[1, 2, 3, 4, 5]” \u767b\u5f55\u540e\u590d\u5236 \u5bf9\u8c61\u6570\u7ec4 \u5bf9\u4e8e\u5bf9\u8c61\u6570\u7ec4\uff0c\u9700\u8981\u4f7f\u7528\u5faa\u73af\u904d\u5386\u6570\u7ec4\uff0c\u5c06\u6bcf\u4e2a\u5143\u7d20\u8f6c\u6362\u4e3a\u5b57\u7b26\u4e32\u5e76\u8fde\u63a5\u8d77\u6765\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b String[] arr = {“a”, “b”, “c”, “d”, “e”}; StringBuilder sb = […]<\/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-64341","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64341","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=64341"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/64341\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=64341"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=64341"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=64341"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}