{"id":66405,"date":"2025-05-03T16:28:47","date_gmt":"2025-05-03T08:28:47","guid":{"rendered":"https:\/\/fwq.ai\/blog\/66405\/"},"modified":"2025-05-03T16:28:47","modified_gmt":"2025-05-03T08:28:47","slug":"%e5%9c%a8java%e4%b8%ad%e6%80%8e%e4%b9%88%e9%80%9a%e8%bf%87%e6%95%b0%e7%bb%84%e5%b1%9e%e6%80%a7-2","status":"publish","type":"post","link":"https:\/\/fwq.ai\/blog\/66405\/","title":{"rendered":"\u5728java\u4e2d\u600e\u4e48\u901a\u8fc7\u6570\u7ec4\u5c5e\u6027"},"content":{"rendered":"

\n \u901a\u8fc7\u6570\u7ec4\u5c5e\u6027\u8bbf\u95ee java \u5bf9\u8c61\u7684\u65b9\u6cd5\u4e4b\u4e00\u662f\u4f7f\u7528\u53cd\u5c04 api\uff0c\u5305\u62ec\uff1a1. \u83b7\u53d6\u6570\u7ec4\u7c7b\u7684 class \u5bf9\u8c61\uff1b2. \u83b7\u53d6\u6570\u7ec4\u5c5e\u6027\u7684 field \u5bf9\u8c61\uff1b3. \u8bbe\u7f6e\u6216\u83b7\u53d6\u6570\u7ec4\u5c5e\u6027\u503c\u3002\n<\/p><\/blockquote>\n

\"\u5728java\u4e2d\u600e\u4e48\u901a\u8fc7\u6570\u7ec4\u5c5e\u6027\u63d2\u56fe\"<\/p>\n

\u5982\u4f55\u901a\u8fc7\u6570\u7ec4\u5c5e\u6027\u8bbf\u95ee Java \u5bf9\u8c61<\/strong><\/p>\n

\u5728 Java \u4e2d\uff0c\u901a\u8fc7\u6570\u7ec4\u5c5e\u6027\u8bbf\u95ee\u5bf9\u8c61\u7684\u4e00\u79cd\u65b9\u6cd5\u662f\u4f7f\u7528\u53cd\u5c04 API\u3002<\/p>\n

\u6b65\u9aa4\uff1a<\/strong><\/p>\n

    \n
  1. \n

    \u83b7\u53d6\u6570\u7ec4\u7c7b\u7684 Class \u5bf9\u8c61\uff1a<\/strong><\/p>\n

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

    Class<?> arrClass = array.getClass();<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/li>\n
  2. \n
    \u83b7\u53d6\u6570\u7ec4\u5c5e\u6027\u7684 Field \u5bf9\u8c61\uff1a<\/strong><\/p>\n
    Field arrField = arrClass.getField(\"propertyName\");<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/li>\n
  3. \n
    \u8bbe\u7f6e\u6216\u83b7\u53d6\u6570\u7ec4\u5c5e\u6027\u503c\uff1a<\/strong><\/p>\n
    \/\/ \u8bbe\u7f6e\u6570\u7ec4\u5c5e\u6027\u503c\narrField.set(array, new Object());\n\n\/\/ \u83b7\u53d6\u6570\u7ec4\u5c5e\u6027\u503c\nObject fieldValue = arrField.get(array);<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/li>\n<\/ol>\n
    \u793a\u4f8b\uff1a<\/strong><\/p>\n
    \u5047\u8bbe\u6709\u4e00\u4e2a Person \u7c7b\u5305\u542b\u4e00\u4e2a String \u6570\u7ec4\u5c5e\u6027 names\uff1a<\/p>\n
    public class Person {\n    private String[] names;\n\n    \/\/ \u7701\u7565\u5176\u4ed6\u4ee3\u7801\n}<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u8981\u901a\u8fc7\u53cd\u5c04\u8bbf\u95ee names \u6570\u7ec4\u5c5e\u6027\uff0c\u53ef\u4ee5\u6267\u884c\u4ee5\u4e0b\u6b65\u9aa4\uff1a<\/p>\n
    Person person = new Person();\nClass<?> personClass = person.getClass();\nField namesField = personClass.getField(\"names\");\n\n\/\/ \u8bbe\u7f6e\u6570\u7ec4\u5c5e\u6027\u503c\nnamesField.set(person, new String[] {\"John\", \"Doe\"});\n\n\/\/ \u83b7\u53d6\u6570\u7ec4\u5c5e\u6027\u503c\nString[] names = (String[]) namesField.get(person);<\/pre>\n
     \u767b\u5f55\u540e\u590d\u5236 <\/p>\n
    \u6ce8\u610f\uff1a<\/strong><\/p>\n
      \n
    • \u786e\u4fdd propertyName \u662f\u6570\u7ec4\u5c5e\u6027\u7684\u540d\u79f0\u3002<\/li>\n
    • \u4f7f\u7528\u53cd\u5c04\u8bbf\u95ee\u79c1\u6709\u6216\u53d7\u4fdd\u62a4\u7684\u5c5e\u6027\u65f6\uff0c\u9700\u8981\u5148\u8c03\u7528 field.setAccessible(true)\u3002<\/li>\n<\/ul>\n
      \u4ee5\u4e0a\u5c31\u662f\u5728java\u4e2d\u600e\u4e48\u901a\u8fc7\u6570\u7ec4\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":"
      \u901a\u8fc7\u6570\u7ec4\u5c5e\u6027\u8bbf\u95ee java \u5bf9\u8c61\u7684\u65b9\u6cd5\u4e4b\u4e00\u662f\u4f7f\u7528\u53cd\u5c04 api\uff0c\u5305\u62ec\uff1a1. \u83b7\u53d6\u6570\u7ec4\u7c7b\u7684 class \u5bf9\u8c61\uff1b2. \u83b7\u53d6\u6570\u7ec4\u5c5e\u6027\u7684 field \u5bf9\u8c61\uff1b3. \u8bbe\u7f6e\u6216\u83b7\u53d6\u6570\u7ec4\u5c5e\u6027\u503c\u3002 \u5982\u4f55\u901a\u8fc7\u6570\u7ec4\u5c5e\u6027\u8bbf\u95ee Java \u5bf9\u8c61 \u5728 Java \u4e2d\uff0c\u901a\u8fc7\u6570\u7ec4\u5c5e\u6027\u8bbf\u95ee\u5bf9\u8c61\u7684\u4e00\u79cd\u65b9\u6cd5\u662f\u4f7f\u7528\u53cd\u5c04 API\u3002 \u6b65\u9aa4\uff1a \u83b7\u53d6\u6570\u7ec4\u7c7b\u7684 Class \u5bf9\u8c61\uff1a \u7acb\u5373\u5b66\u4e60\u201c\u201d\uff1b Class<?> arrClass = array.getClass(); \u767b\u5f55\u540e\u590d\u5236 \u83b7\u53d6\u6570\u7ec4\u5c5e\u6027\u7684 Field \u5bf9\u8c61\uff1a Field arrField = arrClass.getField(“propertyName”); \u767b\u5f55\u540e\u590d\u5236 \u8bbe\u7f6e\u6216\u83b7\u53d6\u6570\u7ec4\u5c5e\u6027\u503c\uff1a \/\/ \u8bbe\u7f6e\u6570\u7ec4\u5c5e\u6027\u503c arrField.set(array, new Object()); \/\/ \u83b7\u53d6\u6570\u7ec4\u5c5e\u6027\u503c Object fieldValue = arrField.get(array); \u767b\u5f55\u540e\u590d\u5236 \u793a\u4f8b\uff1a \u5047\u8bbe\u6709\u4e00\u4e2a Person \u7c7b\u5305\u542b\u4e00\u4e2a String \u6570\u7ec4\u5c5e\u6027 […]<\/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-66405","post","type-post","status-publish","format-standard","hentry","category-16"],"_links":{"self":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66405","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=66405"}],"version-history":[{"count":0,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/posts\/66405\/revisions"}],"wp:attachment":[{"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/media?parent=66405"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/categories?post=66405"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/fwq.ai\/blog\/wp-json\/wp\/v2\/tags?post=66405"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}