{"id":769,"date":"2014-01-08T13:55:12","date_gmt":"2014-01-08T13:55:12","guid":{"rendered":"http:\/\/hsiunien.sinaapp.com\/?p=769"},"modified":"2014-01-08T13:55:12","modified_gmt":"2014-01-08T13:55:12","slug":"%e5%88%a9%e7%94%a8java%e5%8f%8d%e5%b0%84%e6%9c%ba%e5%88%b6%e5%ae%9e%e7%8e%b0%e5%af%b9%e8%b1%a1%e5%80%bc%e6%8b%b7%e8%b4%9d","status":"publish","type":"post","link":"https:\/\/blog.xiunian.wang\/?p=769","title":{"rendered":"\u5229\u7528java\u53cd\u5c04\u673a\u5236\u5b9e\u73b0\u5bf9\u8c61\u503c\u62f7\u8d1d"},"content":{"rendered":"

\u9996\u5148\u9700\u6c42\u662f\u8fd9\u6837\u7684 \uff0c\u6211\u628a\u5b83\u7b80\u5316\u4e00\u4e0b\uff1a<\/p>\n

User user1=new User();
\nuser1.setUserName(\"wxn\");
\nUser user2=new User();
\nuser2.setUserName(\"kkkk\");
\nUser user3=user2;<\/code>
\n\u63a5\u4e0b\u6765\u7684\u64cd\u4f5c\u6211\u60f3\u8ba9user2\u4e2d\u7684\u503c\u548cuser1\u4e2d\u7684\u503c\u5168\u90e8\u76f8\u7b49\u3002\u6211\u4eec\u77e5\u9053\u53ef\u4ee5\u901a\u8fc7 user2=user1.clone()\u65b9\u6cd5\u53bb\u83b7\u5f97\u4e00\u4e2a\u65b0\u7684\u5bf9\u8c61\uff0c\u8fd9\u79cd\u65b9\u6cd5\u7684\u8be6\u7ec6\u4ecb\u7ecd\u5728\u8fd9\u91cc\u53ef\u4ee5\u5b66\u4e60\u3002http:\/\/www.cnblogs.com\/yxnchinahlj\/archive\/2010\/09\/20\/1831615.html<\/a><\/p>\n

\u4f46\u662f\u8fd9\u6837clone\u51fa\u6765\u7684\u662f\u4e00\u4e2a\u65b0\u7684\u5bf9\u8c61\uff0cuser2\u5c31\u662fuser1\u7684\u4e00\u4e2a\u65b0\u5bf9\u8c61\u7684\u62f7\u8d1d\uff0c\u867d\u7136user2\u4e2d\u7684\u503c\u53ef\u4ee5\u548cuser1\u4e2d\u7684\u503c\u76f8\u7b49\uff0c\u4f46\u662f user3\u5c31\u5df2\u7ecf\u4e0d\u662fuser2\u4e4b\u524d\u7684\u5bf9\u8c61\u4e86\uff0c\u6211\u9700\u8981user3\u4e2d\u7684\u503c\u4e5f\u8ddf\u7740\u6539\u53d8\u3002<\/p>\n

\u4e8e\u662f\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u5c31\u662f\u5728User\u7c7b\u4e2d\u589e\u52a0\u4e00\u4e2a\u65b9\u6cd5<\/p>\n

public void copy(User user){\n    this.setUserName(user.getUserName);\n    this.setUserId(user.setUserId);\n     .....\n}<\/pre>\n
\u5982\u679cuser\u4e2d\u7684\u5c5e\u6027\u592a\u591a\u600e\u4e48\u529e\uff1f\u90a3\u5199\u8d77\u6765\u592a\u9ebb\u70e6\u4e86\uff0c\u9664\u4e86\u65b9\u6cd5\u540dget\u548cset\u6709\u533a\u522b\u4e4b\u5916\u6ca1\u4ec0\u4e48\u533a\u522b\uff0c \u4e8e\u662f\u6211\u60f3\u8d77\u4e86\u4e4b\u524d\u770b\u8fc7\u7684java\u53cd\u5c04\u673a\u5236\u6765\u6279\u91cf\u5904\u7406\uff0c\u987a\u4fbf\u5de9\u56fa\u4e00\u4e0bjava\u7684\u53cd\u5c04\u673a\u5236\uff0c\u5b9e\u73b0\u4ee3\u7801\u5982\u4e0b<\/p>\n
public void copy(User user) {\n\/\/\u83b7\u5f97User\u7c7b\u4e2d\u6240\u6709\u7684\u65b9\u6cd5\n\t\tMethod[] methods = user.getClass().getMethods();\n\t\ttry {\n\t\tfor (int i = 0; i < methods.length; i++) {\n\t\t\t\tString mName = methods[i].getName();\n\t\t\t\tif (mName.startsWith(\"set\")) {\n\t\t\t\t\tString nName =null;\n\t\t\t\t\t\/\/\u82e5\u4e3aboolean\u7684\u5c5e\u6027\u5219\u6ca1\u6709get\u65b9\u6cd5 \u53ea\u6709 isXXX\u65b9\u6cd5\n\t\t\t\t\t if(boolean.class.equals(methods[i].getParameterTypes()[0]) ){\n\t\t\t\t\t\t  nName=mName.replace(\"set\", \"is\");\n\t\t\t\t\t  }\telse{\n\t\t\t\t\t\t  nName=mName.replace(\"set\", \"get\");\n\t\t\t\t\t  }\n\t\t\t\t\tMethod method = user.getClass().getDeclaredMethod(nName,\n\t\t\t\t\t\t\tnull);\n\t\t\t\t\tmethods[i].invoke(this, method.invoke(user, null));\n\t\t\t\t}\n\n\t\t\t} \n\t\t} catch (IllegalArgumentException e) {\n\t\t\t\/\/ TODO Auto-generated catch block\n\t\t\te.printStackTrace();\n\t\t} catch (IllegalAccessException e) {\n\t\t\t\/\/ TODO Auto-generated catch block\n\t\t\te.printStackTrace();\n\t\t} catch (InvocationTargetException e) {\n\t\t\t\/\/ TODO Auto-generated catch block\n\t\t\te.printStackTrace();\n\t\t} catch (NoSuchMethodException e) {\n\t\t\t\/\/ TODO Auto-generated catch block\n\t\t\te.printStackTrace();\n\t\t}\n\t}<\/pre>\n
\u5168\u90e8\u4ee3\u7801\u5982\u4e0b<\/p>\n
\n\nimport java.lang.reflect.Field;\nimport java.lang.reflect.InvocationTargetException;\nimport java.lang.reflect.Method;\n\n\/**\n * \n * @author ahsiu\n * \n *\/\n\npublic class User {\n\tprivate int userId;\n\tprivate String userName;\n\tprivate String password;\n\tprivate String email;\n\tprivate String phone;\n\tprivate int loginState;\n   private boolean flag;\n\tpublic int getUserId() {\n\t\treturn userId;\n\t}\n\n\tpublic void copy(User user) {\n\t\tMethod[] methods = user.getClass().getMethods();\n\t\ttry {\n\t\t\tfor (int i = 0; i < methods.length; i++) {\n\t\t\t\tString mName = methods[i].getName();\n\t\t\t\tif (mName.startsWith(\"set\")) {\n\n\t\t\t\t\tString nName =null;\n\t\t\t\t\t\/\/\u82e5\u4e3aboolean\u7684\u5c5e\u6027\u5219\u6ca1\u6709get\u65b9\u6cd5 \u53ea\u6709 isXXX\u65b9\u6cd5\n\t\t\t\t\t if(boolean.class.equals(methods[i].getParameterTypes()[0]) ){\n\t\t\t\t\t\t  nName=mName.replace(\"set\", \"is\");\n\t\t\t\t\t  }\telse{\n\t\t\t\t\t\t  nName=mName.replace(\"set\", \"get\");\n\t\t\t\t\t  }\n\n\t\t\t\t\tMethod method = user.getClass().getDeclaredMethod(nName,\n\t\t\t\t\t\t\tnull);\n\t\t\t\t\tmethods[i].invoke(this, method.invoke(user, null));\n\n\t\t\t\t}\n\n\t\t\t}\n\t\t} catch (IllegalArgumentException e) {\n\t\t\t\/\/ TODO Auto-generated catch block\n\t\t\te.printStackTrace();\n\t\t} catch (IllegalAccessException e) {\n\t\t\t\/\/ TODO Auto-generated catch block\n\t\t\te.printStackTrace();\n\t\t} catch (InvocationTargetException e) {\n\t\t\t\/\/ TODO Auto-generated catch block\n\t\t\te.printStackTrace();\n\t\t} catch (NoSuchMethodException e) {\n\t\t\t\/\/ TODO Auto-generated catch block\n\t\t\te.printStackTrace();\n\t\t}\n\t}\n\n\tpublic void setUserId(int userId) {\n\t\tthis.userId = userId;\n\t}\n\n\tpublic String getEmail() {\n\t\treturn email;\n\t}\n\n\tpublic void setEmail(String email) {\n\t\tthis.email = email;\n\t}\n\n\tpublic String getPhone() {\n\t\treturn phone;\n\t}\n\n\tpublic void setPhone(String phone) {\n\t\tthis.phone = phone;\n\t}\n\n\tpublic int getLoginState() {\n\t\treturn loginState;\n\t}\n\n\tpublic void setLoginState(int loginState) {\n\t\tthis.loginState = loginState;\n\t}\n\n\tpublic String getPassword() {\n\t\treturn password;\n\t}\n\n\tpublic void setPassword(String password) {\n\t\tthis.password = password;\n\t}\n\n\tpublic String getUserName() {\n\t\treturn userName;\n\t}\n\n\tpublic void setUserName(String userName) {\n\t\tthis.userName = userName;\n\t}\n\n\tpublic boolean isFlag() {\n\t\treturn flag;\n\t}\n\n\tpublic void setFlag(boolean flag) {\n\t\tthis.flag = flag;\n\t}\n\n\tpublic static void main(String[] args) {\n\t\tUser user1=new User();\n\t\tuser1.setUserName(\"wxn\");\n\t\tUser user2=new User();\n\t\tuser2.setUserName(\"kkkk\");\n\t\tUser user3=user2;\n\t\tSystem.out.println(user1.getUserName());\n\t\tSystem.out.println(user2.getUserName());\n\t\tSystem.out.println(user3.getUserName());\t\n\t\tSystem.out.println(\"\");\n\t\tuser2.copy(user1);\n\t\tSystem.out.println(user1.getUserName());\n\t\tSystem.out.println(user2.getUserName());\n\t\tSystem.out.println(user3.getUserName());\n\t\tSystem.out.println(\"\");\n\t\tuser3.setUserName(\"ahsiu\");\n\t\tSystem.out.println(user1.getUserName());\n\t\tSystem.out.println(user2.getUserName());\n\t\tSystem.out.println(user3.getUserName());\n\t}\n}<\/pre>\n","protected":false},"excerpt":{"rendered":"
\u9996\u5148\u9700\u6c42\u662f\u8fd9\u6837\u7684 \uff0c\u6211\u628a\u5b83\u7b80\u5316\u4e00\u4e0b\uff1a User user1=new User(); user1.setUserName(“wxn”); User user2=new User(); user2.setUserName(“kkkk”); User user3=user2; \u63a5\u4e0b\u6765\u7684\u64cd\u4f5c\u6211\u60f3\u8ba9user2\u4e2d\u7684\u503c\u548cuser1\u4e2d\u7684\u503c\u5168\u90e8\u76f8\u7b49\u3002\u6211\u4eec\u77e5\u9053\u53ef\u4ee5\u901a\u8fc7 user2=user1.clone()\u65b9\u6cd5\u53bb\u83b7\u5f97\u4e00\u4e2a\u65b0\u7684\u5bf9\u8c61\uff0c\u8fd9\u79cd\u65b9\u6cd5\u7684\u8be6\u7ec6\u4ecb\u7ecd\u5728\u8fd9\u91cc\u53ef\u4ee5\u5b66\u4e60\u3002http:\/\/www.cnblogs.com\/yxnchinahlj\/archive\/2010\/09\/20\/1831615.html \u4f46\u662f\u8fd9\u6837clone\u51fa\u6765\u7684\u662f\u4e00\u4e2a\u65b0\u7684\u5bf9\u8c61\uff0cuser2\u5c31\u662fuser1\u7684\u4e00\u4e2a\u65b0\u5bf9\u8c61\u7684\u62f7\u8d1d\uff0c\u867d\u7136user2\u4e2d\u7684\u503c\u53ef\u4ee5\u548cuser1\u4e2d\u7684\u503c\u76f8\u7b49\uff0c\u4f46\u662f user3\u5c31\u5df2\u7ecf\u4e0d\u662fuser2\u4e4b\u524d\u7684\u5bf9\u8c61\u4e86\uff0c\u6211\u9700\u8981user3\u4e2d\u7684\u503c\u4e5f\u8ddf\u7740\u6539\u53d8\u3002 \u4e8e\u662f\u6700\u7b80\u5355\u7684\u65b9\u6cd5\u5c31\u662f\u5728User\u7c7b\u4e2d\u589e\u52a0\u4e00\u4e2a\u65b9\u6cd5 public void copy(User user){ this.setUserName(user.getUserName); this.setUserId(user.setUserId); ….. } \u5982\u679cuser\u4e2d\u7684\u5c5e\u6027\u592a\u591a\u600e\u4e48\u529e\uff1f\u90a3\u5199\u8d77\u6765\u592a\u9ebb\u70e6\u4e86\uff0c\u9664\u4e86\u65b9\u6cd5\u540dget\u548cset\u6709\u533a\u522b\u4e4b\u5916\u6ca1\u4ec0\u4e48\u533a\u522b\uff0c \u4e8e\u662f\u6211\u60f3\u8d77\u4e86\u4e4b\u524d\u770b\u8fc7\u7684java\u53cd\u5c04\u673a\u5236\u6765\u6279\u91cf\u5904\u7406\uff0c\u987a\u4fbf\u5de9\u56fa\u4e00\u4e0bjava\u7684\u53cd\u5c04\u673a\u5236\uff0c\u5b9e\u73b0\u4ee3\u7801\u5982\u4e0b public void copy(User user) { \/\/\u83b7\u5f97User\u7c7b\u4e2d\u6240\u6709\u7684\u65b9\u6cd5 Method[] methods = user.getClass().getMethods(); try { for (int i = 0; i < methods.length; i++) { String mName = methods[i].getName(); if (mName.startsWith(“set”)) … <\/p>\n
Continue reading “\u5229\u7528java\u53cd\u5c04\u673a\u5236\u5b9e\u73b0\u5bf9\u8c61\u503c\u62f7\u8d1d”<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[4,8],"tags":[],"_links":{"self":[{"href":"https:\/\/blog.xiunian.wang\/index.php?rest_route=\/wp\/v2\/posts\/769"}],"collection":[{"href":"https:\/\/blog.xiunian.wang\/index.php?rest_route=\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/blog.xiunian.wang\/index.php?rest_route=\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/blog.xiunian.wang\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/blog.xiunian.wang\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=769"}],"version-history":[{"count":0,"href":"https:\/\/blog.xiunian.wang\/index.php?rest_route=\/wp\/v2\/posts\/769\/revisions"}],"wp:attachment":[{"href":"https:\/\/blog.xiunian.wang\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=769"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/blog.xiunian.wang\/index.php?rest_route=%2Fwp%2Fv2%2Fcategories&post=769"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/blog.xiunian.wang\/index.php?rest_route=%2Fwp%2Fv2%2Ftags&post=769"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}