{"id":761,"date":"2023-10-29T17:44:37","date_gmt":"2023-10-24T16:48:59","guid":{"rendered":"https:\/\/www.silicloud.com\/zh\/blog\/index.php\/2023\/11\/30\/java-%e9%a1%b9%e7%9b%ae-lombok\/"},"modified":"2025-08-03T06:47:16","modified_gmt":"2025-08-02T22:47:16","slug":"java-%e9%a1%b9%e7%9b%ae-lombok","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/zh\/blog\/java-%e9%a1%b9%e7%9b%ae-lombok\/","title":{"rendered":"2023\u5e74Java Lombok\u5b8c\u5168\u6307\u5357\uff1a\u7b80\u5316\u4ee3\u7801\u5f00\u53d1\u7684\u5f3a\u5927\u5de5\u5177\u8be6\u89e3"},"content":{"rendered":"<p>Project Lombok\u662f\u4e00\u4e2a\u975e\u5e38\u6709\u7528\u7684\u5de5\u5177\uff0c\u53ef\u7528\u4e8e\u51cf\u5c11Java\u9879\u76ee\u4e2d\u7684\u6837\u677f\u4ee3\u7801\u3002<\/p>\n<h2>\u95ee\u9898\u9648\u8ff0<\/h2>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/6564855ca4b2f92e6c73089e\/2-0.png\" alt=\"java project lombok\" \/><\/div>\n<pre class=\"post-pre\"><code>package com.askrakesh.java.manage_boilerplate;\r\n\r\nimport java.time.LocalDate;\r\n\r\npublic class Person {\r\n\r\n\tString firstName;\r\n\tString lastName;\r\n\tLocalDate dateOfBirth;\r\n\r\n\tpublic Person(String firstName, String lastName, LocalDate dateOfBirth) {\r\n\t\tsuper();\r\n\t\tthis.firstName = firstName;\r\n\t\tthis.lastName = lastName;\r\n\t\tthis.dateOfBirth = dateOfBirth;\r\n\t}\r\n\r\n\tpublic String getFirstName() {\r\n\t\treturn firstName;\r\n\t}\r\n\r\n\tpublic void setFirstName(String firstName) {\r\n\t\tthis.firstName = firstName;\r\n\t}\r\n\r\n\tpublic String getLastName() {\r\n\t\treturn lastName;\r\n\t}\r\n\r\n\tpublic void setLastName(String lastName) {\r\n\t\tthis.lastName = lastName;\r\n\t}\r\n\r\n\tpublic LocalDate getDateOfBirth() {\r\n\t\treturn dateOfBirth;\r\n\t}\r\n\r\n\tpublic void setDateOfBirth(LocalDate dateOfBirth) {\r\n\t\tthis.dateOfBirth = dateOfBirth;\r\n\t}\r\n\r\n\t@Override\r\n\tpublic int hashCode() {\r\n\t\tfinal int prime = 31;\r\n\t\tint result = 1;\r\n\t\tresult = prime * result + ((dateOfBirth == null) ? 0 : dateOfBirth.hashCode());\r\n\t\tresult = prime * result + ((firstName == null) ? 0 : firstName.hashCode());\r\n\t\tresult = prime * result + ((lastName == null) ? 0 : lastName.hashCode());\r\n\t\treturn result;\r\n\t}\r\n\r\n\t@Override\r\n\tpublic boolean equals(Object obj) {\r\n\t\tif (this == obj)\r\n\t\t\treturn true;\r\n\t\tif (obj == null)\r\n\t\t\treturn false;\r\n\t\tif (getClass() != obj.getClass())\r\n\t\t\treturn false;\r\n\t\tPerson other = (Person) obj;\r\n\t\tif (dateOfBirth == null) {\r\n\t\t\tif (other.dateOfBirth != null)\r\n\t\t\t\treturn false;\r\n\t\t} else if (!dateOfBirth.equals(other.dateOfBirth))\r\n\t\t\treturn false;\r\n\t\tif (firstName == null) {\r\n\t\t\tif (other.firstName != null)\r\n\t\t\t\treturn false;\r\n\t\t} else if (!firstName.equals(other.firstName))\r\n\t\t\treturn false;\r\n\t\tif (lastName == null) {\r\n\t\t\tif (other.lastName != null)\r\n\t\t\t\treturn false;\r\n\t\t} else if (!lastName.equals(other.lastName))\r\n\t\t\treturn false;\r\n\t\treturn true;\r\n\t}\r\n\r\n\t@Override\r\n\tpublic String toString() {\r\n\t\treturn \"Person [firstName=\" + firstName + \", lastName=\" + lastName + \"dateOfBirth=\" + dateOfBirth + \"]\";\r\n\t}\r\n\r\n}\r\n<\/code><\/pre>\n<p>\u4e00\u4e2a\u7c7b\u5e94\u8be5\u4e3a\u5b9e\u4f8b\u53d8\u91cf\u63d0\u4f9bgetter-setter\u65b9\u6cd5\uff0c\u5b9e\u73b0equals\u548chashCode\u65b9\u6cd5\uff0c\u63d0\u4f9b\u6240\u6709\u5b57\u6bb5\u7684\u6784\u9020\u51fd\u6570\uff0c\u5e76\u5b9e\u73b0toString\u65b9\u6cd5\u3002\u8fd9\u4e2a\u7c7b\u76ee\u524d\u6ca1\u6709\u4e1a\u52a1\u903b\u8f91\uff0c\u5373\u4f7f\u6ca1\u6709\u4e1a\u52a1\u903b\u8f91\uff0c\u4ee3\u7801\u4e5f\u670980\u591a\u884c\u3002\u8fd9\u592a\u8352\u8c2c\u4e86\u3002<\/p>\n<h2>Project Lombok<\/h2>\n<p>Project Lombok\u662f\u4e00\u4e2aJava\u5e93\uff0c\u53ef\u81ea\u52a8\u4e0e\u60a8\u7684\u7f16\u8f91\u5668\u548c\u6784\u5efa\u5de5\u5177\u8fdb\u884c\u8fde\u63a5\uff0c\u5e76\u5e2e\u52a9\u51cf\u5c11\u6837\u677f\u4ee3\u7801\u3002\u8ba9\u6211\u4eec\u5148\u4e86\u89e3\u5982\u4f55\u8bbe\u7f6eLombok\u9879\u76ee\u3002<\/p>\n<h3>Java \u9879\u76ee Lombok \u7684\u5de5\u4f5c\u539f\u7406\u662f\u600e\u6837\u7684\uff1f<\/h3>\n<p>Lombok\u5728\u6211\u4eec\u7684\u4ee3\u7801\u4e2d\u6709\u5404\u79cd\u53ef\u4ee5\u4f7f\u7528\u7684\u6ce8\u89e3\uff0c\u8fd9\u4e9b\u6ce8\u89e3\u5728\u7f16\u8bd1\u65f6\u88ab\u5904\u7406\uff0c\u5e76\u4e14\u6839\u636e\u4f7f\u7528\u7684\u6ce8\u89e3\u8fdb\u884c\u9002\u5f53\u7684\u4ee3\u7801\u6269\u5c55\u3002Lombok\u53ea\u5bf9\u4ee3\u7801\u8fdb\u884c\u89c6\u56fe\u65f6\u95f4\u7684\u51cf\u5c11\uff0c\u5728\u7f16\u8bd1\u4e4b\u540e\uff0c\u5b57\u8282\u7801\u6ce8\u5165\u4e86\u6240\u6709\u7684\u6837\u677f\u4ee3\u7801\u3002\u8fd9\u6709\u52a9\u4e8e\u4fdd\u6301\u6211\u4eec\u7684\u4ee3\u7801\u5e93\u5c0f\uff0c\u7b80\u6d01\uff0c\u6613\u8bfb\u548c\u6613\u4e8e\u7ef4\u62a4\u3002<\/p>\n<h3>Lombok \u9879\u76ee Maven<\/h3>\n<p>\u5728\u4f60\u7684\u9879\u76ee\u4e2d\u6dfb\u52a0Lombok\u5f88\u7b80\u5355\u3002\u53ea\u9700\u5728\u4f60\u7684maven\u9879\u76ee\u7684pom.xml\u6587\u4ef6\u4e2d\u6dfb\u52a0\u4e0b\u9762\u7684\u4f9d\u8d56\u3002<\/p>\n<pre class=\"post-pre\"><code>&lt;dependency&gt;\r\n\t&lt;groupId&gt;org.projectlombok&lt;\/groupId&gt;\r\n\t&lt;artifactId&gt;lombok&lt;\/artifactId&gt;\r\n\t&lt;version&gt;1.16.20&lt;\/version&gt;\r\n&lt;\/dependency&gt;\r\n<\/code><\/pre>\n<h3>\u5728IDE\uff08Eclipse\uff09\u4e2d\u6dfb\u52a0Lombok\u63d2\u4ef6\u3002<\/h3>\n<p>\u4ee5\u4e0b\u662fWindows\u7684\u5b89\u88c5\u6b65\u9aa4\uff1a<\/p>\n<ol>\n<li>\u4ecehttps:\/\/projectlombok.org\/download\u4e0b\u8f7djar\u6587\u4ef6\uff0c\u6216\u4f7f\u7528\u4ecemaven\u6784\u5efa\u4e0b\u8f7d\u7684jar\u6587\u4ef6\u3002<\/li>\n<li>\u5728\u7ec8\u7aef\u4e2d\u6267\u884c\u4ee5\u4e0b\u547d\u4ee4\uff1ajava -jar lombok.jar<\/li>\n<li>\u8be5\u547d\u4ee4\u5c06\u6253\u5f00\u4e00\u4e2a\u7a97\u53e3\uff0c\u5982\u4e0b\u56fe\u6240\u793a\uff0c\u8bf7\u5b89\u88c5\u5e76\u9000\u51fa\u5b89\u88c5\u7a0b\u5e8f\uff0c\u7136\u540e\u91cd\u65b0\u542f\u52a8eclipse\u3002<\/li>\n<\/ol>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/6564855ca4b2f92e6c73089e\/15-0.png\" alt=\"java lombok install eclipse\" \/><\/div>\n<ol start=\"4\">\n<li>\u5c06lombok.jar\u590d\u5236\u5230Eclipse.app\/Contents\/MacOS\u76ee\u5f55\u4e2d\u3002<\/li>\n<li>\u5728Eclipse.app\/Contents\/Eclipse\/eclipse.ini\u6587\u4ef6\u7684\u672b\u5c3e\u6dfb\u52a0-javaagent:lombok.jar\u3002<\/li>\n<li>\u91cd\u65b0\u542f\u52a8Eclipse\uff0c\u5e76\u5728\u9879\u76ee\u5c5e\u6027\u4e2d\u542f\u7528&#8221;\u6ce8\u89e3\u5904\u7406&#8221;\uff0c\u5982\u4e0b\u56fe\u6240\u793a\u3002<\/li>\n<\/ol>\n<h3>\u5728Eclipse\u7684\u5927\u7eb2\u4e2d\u6d4f\u89c8Lombok\u7684\u4fe1\u606f\u3002<\/h3>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/6564855ca4b2f92e6c73089e\/18-0.png\" alt=\"project lombok eclipse getter setter annotations\" \/><\/div>\n<h3>Lombok\u5728Java\u5b57\u8282\u7801\u4e2d\u7684\u7aa5\u89c6<\/h3>\n<div><img decoding=\"async\" class=\"post-images\" title=\"\" src=\"https:\/\/cdn.silicloud.com\/blog-img\/blog\/img\/6564855ca4b2f92e6c73089e\/20-0.png\" alt=\"project lombok annotations runtime\" \/><\/div>\n<h3>Project Lombok \u6ce8\u89e3<\/h3>\n<p>Project Lombok\u63d0\u4f9b\u4e86\u8bb8\u591a\u6ce8\u89e3\uff0c\u6709\u52a9\u4e8e\u51cf\u5c11\u5404\u79cd\u573a\u666f\u4e2d\u7684\u6837\u677f\u4ee3\u7801\u3002\u8ba9\u6211\u4eec\u770b\u4e00\u4e9b\u4f8b\u5b50\u3002<\/p>\n<h4>\u6784\u9020\u51fd\u6570\u6ce8\u89e3<\/h4>\n<pre class=\"post-pre\"><code>@AllArgsConstructor\r\npublic class PersonLombok {\r\n\t@NonNull String firstName;\r\n\tString lastName;\r\n\tLocalDate dateOfBirth;\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\tnew PersonLombok(null, \"Kumar\", LocalDate.now());\r\n\t}\r\n}\r\n<\/code><\/pre>\n<p>\u4ee5\u4e0a\u4ee3\u7801\u5728\u7c7b\u4e2d\u6ce8\u5165\u4ee5\u4e0b\u5185\u5bb9\uff1a<\/p>\n<ul>\n<li>\u4f7f\u7528@AllArgsConstructor\u6ce8\u89e3\u7684\u5e26\u6709\u6240\u6709\u53c2\u6570\u7684\u6784\u9020\u51fd\u6570<\/li>\n<li>\u5728\u4f20\u9012\u53c2\u6570\u5230\u6784\u9020\u51fd\u6570\u65f6\u8fdb\u884c\u7a7a\u503c\u68c0\u67e5\uff0c\u4f7f\u7528@NonNull\u3002\u5728\u5c06\u53c2\u6570\u4f5c\u4e3a\u65b9\u6cd5\u53c2\u6570\u4f20\u9012\u65f6\uff0c\u4e5f\u53ef\u4ee5\u4f7f\u7528@NonNull\u6ce8\u89e3\u3002<\/li>\n<\/ul>\n<p>\u7a0b\u5e8f\u8fd0\u884c\u7ed3\u679c\u5982\u4e0b\u3002\u4f7f\u7528@RequiredArgsConstructor\u751f\u6210\u4e00\u4e2a\u6784\u9020\u51fd\u6570\uff0c\u4e3a\u6bcf\u4e2a\u9700\u8981\u7279\u6b8a\u5904\u7406\u7684\u5b57\u6bb5\u751f\u6210\u4e00\u4e2a\u53c2\u6570\u3002\u6240\u6709\u672a\u521d\u59cb\u5316\u7684final\u5b57\u6bb5\u90fd\u4f1a\u751f\u6210\u4e00\u4e2a\u53c2\u6570\uff0c\u4ee5\u53ca\u4efb\u4f55\u88ab\u6807\u8bb0\u4e3a@NonNull\u4f46\u5728\u58f0\u660e\u65f6\u672a\u521d\u59cb\u5316\u7684\u5b57\u6bb5\u3002<\/p>\n<h4>\u83b7\u53d6\u5668\/\u8bbe\u7f6e\u5668\u6ce8\u89e3<\/h4>\n<p>\u8fd9\u4e9b\u6ce8\u89e3\u53ef\u4ee5\u5728\u5b57\u6bb5\u6216\u7c7b\u7ea7\u522b\u4f7f\u7528\u3002\u5982\u679c\u60a8\u60f3\u8981\u7ec6\u7c92\u5ea6\u63a7\u5236\uff0c\u5219\u5728\u5b57\u6bb5\u7ea7\u522b\u4f7f\u7528\u3002\u5f53\u5728\u7c7b\u7ea7\u522b\u4f7f\u7528\u65f6\uff0c\u4f1a\u521b\u5efa\u6240\u6709\u7684getter\/setter\u65b9\u6cd5\u3002\u8ba9\u6211\u4eec\u7ee7\u7eed\u5904\u7406\u4e0a\u9762\u521b\u5efa\u7684\u7c7b\u3002<\/p>\n<pre class=\"post-pre\"><code>@AllArgsConstructor @Getter @Setter\r\npublic class PersonLombok {\r\n\tString firstName;\r\n\tString lastName;\r\n\tLocalDate dateOfBirth;\r\n}\r\n<\/code><\/pre>\n<h4>equals\uff0chashCode\u548ctoString\u6ce8\u89e3<\/h4>\n<p>\u5728\u521b\u5efa\u7c7b\u65f6\uff0c\u5efa\u8bae\u91cd\u5199hashCode()\u548cequals()\u65b9\u6cd5\u3002\u5728Lombok\u4e2d\uff0c\u6211\u4eec\u6709@EqualsAndHashCode\u6ce8\u89e3\uff0c\u5b83\u4f1a\u6ce8\u5165equals()\u548chashCode()\u65b9\u6cd5\u7684\u4ee3\u7801\uff0c\u56e0\u4e3a\u5b83\u4eec\u662f\u76f8\u4e92\u5173\u8054\u7684\u3002\u53e6\u5916\uff0c@ToString\u6ce8\u89e3\u63d0\u4f9b\u4e86toString()\u7684\u5b9e\u73b0\u3002\u8ba9\u6211\u4eec\u770b\u770b\u8fd9\u4e2a\uff1a<\/p>\n<pre class=\"post-pre\"><code>@AllArgsConstructor @Getter @Setter\r\n@EqualsAndHashCode\r\n@ToString\r\npublic class PersonLombok {\r\n\tString firstName;\r\n\tString lastName;\r\n\tLocalDate dateOfBirth;\r\n}\r\n<\/code><\/pre>\n<p>\u73b0\u5728\uff0c\u6211\u4eec\u4f7f\u7528Lombok\u6ce8\u89e3\u521b\u5efa\u4e86Person\u7c7b\uff0c\u6ca1\u6709\u4efb\u4f55\u6837\u677f\u4ee3\u7801\u3002\u7136\u800c\uff0c\u60c5\u51b5\u53d8\u5f97\u66f4\u597d\uff0c\u6211\u4eec\u53ef\u4ee5\u7528@Data\u66ff\u6362\u4e0a\u8ff0\u7c7b\u4e2d\u4f7f\u7528\u7684\u6240\u6709\u6ce8\u89e3\uff0c\u5e76\u83b7\u5f97\u76f8\u540c\u7684\u529f\u80fd\u3002<\/p>\n<h4>\u57fa\u4e8e\u8bbe\u8ba1\u6a21\u5f0f\u7684\u6ce8\u89e3<\/h4>\n<p>@Builder\u5141\u8bb8\u60a8\u81ea\u52a8\u751f\u6210\u4f7f\u7528\u6784\u5efa\u5668\u6a21\u5f0f\u5b9e\u4f8b\u5316\u7c7b\u6240\u9700\u7684\u4ee3\u7801\u3002<\/p>\n<pre class=\"post-pre\"><code>@Builder\r\npublic class Employee {\r\n\tString firstName;\r\n\tString lastName;\r\n\tLocalDate dateOfBirth;\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\tEmployee emp = new EmployeeBuilder().firstName(\"Rakesh\")\r\n\t\t\t\t.lastName(\"Kumar\")\r\n\t\t\t\t.dateOfBirth(LocalDate.now())\r\n\t\t\t\t.build();\r\n\t}\r\n}\r\n<\/code><\/pre>\n<p>@Delegate\u751f\u6210\u5c06\u8c03\u7528\u59d4\u6258\u7ed9\u4f7f\u7528\u8be5\u6ce8\u89e3\u7684\u5b57\u6bb5\u7684\u59d4\u6258\u65b9\u6cd5\u3002\u9075\u5faa&#8221;\u4f18\u5148\u4f7f\u7528\u7ec4\u5408\u800c\u4e0d\u662f\u7ee7\u627f&#8221;\u7684\u539f\u5219\uff0c\u4f46\u8fd9\u4f1a\u521b\u5efa\u5f88\u591a\u7c7b\u4f3c\u9002\u914d\u5668\u6a21\u5f0f\u7684\u6837\u677f\u4ee3\u7801\u3002\u5728\u5b9e\u73b0\u6b64\u529f\u80fd\u65f6\uff0cLombok\u53c2\u8003\u4e86\u76f8\u540c\u540d\u79f0\u7684Groovy\u6ce8\u89e3\u3002\u8ba9\u6211\u4eec\u770b\u4e00\u4e2a\u5b9e\u73b0\uff1a<\/p>\n<pre class=\"post-pre\"><code>@RequiredArgsConstructor\r\npublic class AdapterImpl implements Adapter {\r\n\t@Delegate\r\n\tprivate final Adaptee instance;\r\n\r\n\tpublic static void main(String[] args) {\r\n\t\tAdapterImpl impl = new AdapterImpl(new Adaptee());\r\n\t\timpl.display();\r\n\t}\r\n}\r\n\r\ninterface Adapter {\r\n\tpublic void display();\r\n}\r\n\r\nclass Adaptee {\r\n\tpublic void display() {\r\n\t\tSystem.out.println(\"In Adaptee.display()\");\r\n\t}\r\n}\r\n<\/code><\/pre>\n<p>Lombok\u63d0\u4f9b\u4e86\u6240\u6709\u6ce8\u89e3\u7684\u7ec6\u7c92\u5ea6\u63a7\u5236\u529f\u80fd\u3002<\/p>\n<h3>\u6a21\u677f\uff1aJava\u67b6\u6784\u5e08\u5728\u542c\u5417\uff1f<\/h3>\n<p>\u662f\u7684\uff0c\u5b83\u4eec\u662f\u8fd9\u6837\u7684\u3002\u4f60\u9700\u8981\u660e\u767d\uff0c\u4e0e\u5176\u4ed6\u8bed\u8a00\u4e0d\u540c\uff0cJava \u5728\u5347\u7ea7\u8bed\u8a00\u65b9\u9762\u975e\u5e38\u5c0f\u5fc3\uff0c\u4ee5\u514d\u7834\u574f\u4efb\u4f55\u4f7f\u7528\u65e7\u7248\u672c Java \u7684\u73b0\u6709\u4ee3\u7801\u5e93\u3002\u8fd9\u672c\u8eab\u5c31\u662f\u4e00\u9879\u5de8\u5927\u7684\u4efb\u52a1\uff0c\u4e0d\u80fd\u5ffd\u89c6\u3002\u4ed6\u4eec\u5df2\u7ecf\u5728\u8bed\u8a00\u4e2d\u4fee\u6539\u548c\u6784\u5efa\u66f4\u597d\u7684\u7c7b\u578b\u63a8\u65ad\u529f\u80fd\uff0c\u5e76\u5df2\u63a8\u51fa\u3002Java 10 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