{"id":124,"date":"2025-07-12T18:31:18","date_gmt":"2025-07-12T10:31:18","guid":{"rendered":"https:\/\/yingjun.run\/?p=124"},"modified":"2025-07-12T18:39:19","modified_gmt":"2025-07-12T10:39:19","slug":"java%e5%9f%ba%e7%a1%80%e4%b8%8b","status":"publish","type":"post","link":"https:\/\/yingjun.run\/index.php\/2025\/07\/12\/java%e5%9f%ba%e7%a1%80%e4%b8%8b\/","title":{"rendered":"Java\u57fa\u7840\u4e0b"},"content":{"rendered":"

\"file\"<\/p>\n

<\/span>Exception \u548c Error \u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/span><\/h3>\n

\u5728 Java \u4e2d\uff0c\u6240\u6709\u7684\u5f02\u5e38\u90fd\u6709\u4e00\u4e2a\u5171\u540c\u7684\u7956\u5148 java.lang \u5305\u4e2d\u7684 Throwable \u7c7b\u3002Throwable \u7c7b\u6709\u4e24\u4e2a\u91cd\u8981\u7684\u5b50\u7c7b:
\nException<\/strong> :\u7a0b\u5e8f\u672c\u8eab\u53ef\u4ee5\u5904\u7406\u7684\u5f02\u5e38\uff0c\u53ef\u4ee5\u901a\u8fc7 catch \u6765\u8fdb\u884c\u6355\u83b7\u3002Exception \u53c8\u53ef\u4ee5\u5206\u4e3a Checked Exception (\u53d7\u68c0\u67e5\u5f02\u5e38\uff0c\u5fc5\u987b\u5904\u7406) \u548c Unchecked Exception (\u4e0d\u53d7\u68c0\u67e5\u5f02\u5e38\uff0c\u53ef\u4ee5\u4e0d\u5904\u7406)\u3002
\nError<\/strong>\uff1aError \u5c5e\u4e8e\u7a0b\u5e8f\u65e0\u6cd5\u5904\u7406\u7684\u9519\u8bef \uff0c\u6211\u4eec\u6ca1\u529e\u6cd5\u901a\u8fc7 catch \u6765\u8fdb\u884c\u6355\u83b7\u4e0d\u5efa\u8bae\u901a\u8fc7catch\u6355\u83b7 \u3002\u4f8b\u5982 Java \u865a\u62df\u673a\u8fd0\u884c\u9519\u8bef\uff08Virtual MachineError\uff09\u3001\u865a\u62df\u673a\u5185\u5b58\u4e0d\u591f\u9519\u8bef(OutOfMemoryError)\u3001\u7c7b\u5b9a\u4e49\u9519\u8bef\uff08NoClassDefFoundError\uff09\u7b49 \u3002\u8fd9\u4e9b\u5f02\u5e38\u53d1\u751f\u65f6\uff0cJava \u865a\u62df\u673a\uff08JVM\uff09\u4e00\u822c\u4f1a\u9009\u62e9\u7ebf\u7a0b\u7ec8\u6b62\u3002<\/p>\n

<\/span>Checked Exception \u548c Unchecked Exception \u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/span><\/h3>\n

Checked Exception \u5373 \u53d7\u68c0\u67e5\u5f02\u5e38<\/strong> \uff1a
\nJava \u4ee3\u7801\u5728\u7f16\u8bd1\u8fc7\u7a0b\u4e2d\uff0c\u5982\u679c\u53d7\u68c0\u67e5\u5f02\u5e38\u6ca1\u6709\u88ab catch\u6216\u8005throws \u5173\u952e\u5b57\u5904\u7406\u7684\u8bdd\uff0c\u5c31\u6ca1\u529e\u6cd5\u901a\u8fc7\u7f16\u8bd1\u3002
\nUnchecked Exception \u5373 \u4e0d\u53d7\u68c0\u67e5\u5f02\u5e38 \uff1a<\/strong>
\nJava \u4ee3\u7801\u5728\u7f16\u8bd1\u8fc7\u7a0b\u4e2d \uff0c\u6211\u4eec\u5373\u4f7f\u4e0d\u5904\u7406\u4e0d\u53d7\u68c0\u67e5\u5f02\u5e38\u4e5f\u53ef\u4ee5\u6b63\u5e38\u901a\u8fc7\u7f16\u8bd1\u3002
\n\"file\"<\/p>\n

<\/span>Throwable \u7c7b\u5e38\u7528\u65b9\u6cd5\u6709\u54ea\u4e9b\uff1f<\/span><\/h3>\n

String getMessage():<\/strong> \u8fd4\u56de\u5f02\u5e38\u53d1\u751f\u65f6\u7684\u8be6\u7ec6\u4fe1\u606f
\nString toString():<\/strong> \u8fd4\u56de\u5f02\u5e38\u53d1\u751f\u65f6\u7684\u7b80\u8981\u63cf\u8ff0
\nString getLocalizedMessage():<\/strong> \u8fd4\u56de\u5f02\u5e38\u5bf9\u8c61\u7684\u672c\u5730\u5316\u4fe1\u606f\u3002\u4f7f\u7528 Throwable \u7684\u5b50\u7c7b\u8986\u76d6\u8fd9\u4e2a\u65b9\u6cd5\uff0c\u53ef\u4ee5\u751f\u6210\u672c\u5730\u5316\u4fe1\u606f\u3002\u5982\u679c\u5b50\u7c7b\u6ca1\u6709\u8986\u76d6\u8be5\u65b9\u6cd5\uff0c\u5219\u8be5\u65b9\u6cd5\u8fd4\u56de\u7684\u4fe1\u606f\u4e0e getMessage()\u8fd4\u56de\u7684\u7ed3\u679c\u76f8\u540c
\nvoid printStackTrace()<\/strong>: \u5728\u63a7\u5236\u53f0\u4e0a\u6253\u5370 Throwable \u5bf9\u8c61\u5c01\u88c5\u7684\u5f02\u5e38\u4fe1\u606f<\/p>\n

<\/span>try-catch-finally \u5982\u4f55\u4f7f\u7528\uff1f<\/span><\/h3>\n

try\u5757\uff1a\u7528\u4e8e\u6355\u83b7\u5f02\u5e38\u3002\u5176\u540e\u53ef\u63a5\u96f6\u4e2a\u6216\u591a\u4e2a catch \u5757\uff0c\u5982\u679c\u6ca1\u6709 catch \u5757\uff0c\u5219\u5fc5\u987b\u8ddf\u4e00\u4e2a finally \u5757\u3002catch\u5757\uff1a\u7528\u4e8e\u5904\u7406 try \u6355\u83b7\u5230\u7684\u5f02\u5e38\u3002finally \u5757\uff1a\u65e0\u8bba\u662f\u5426\u6355\u83b7\u6216\u5904\u7406\u5f02\u5e38\uff0cfinally \u5757\u91cc\u7684\u8bed\u53e5\u90fd\u4f1a\u88ab\u6267\u884c\u3002\u5f53\u5728 try \u5757\u6216 catch \u5757\u4e2d\u9047\u5230 return \u8bed\u53e5\u65f6\uff0cfinally \u8bed\u53e5\u5757\u5c06\u5728\u65b9\u6cd5\u8fd4\u56de\u4e4b\u524d\u88ab\u6267\u884c\u3002<\/p>\n

\u6ce8\u610f\uff1a\u4e0d\u8981\u5728 finally \u8bed\u53e5\u5757\u4e2d\u4f7f\u7528 return!<\/strong> \u5f53 try \u8bed\u53e5\u548c finally \u8bed\u53e5\u4e2d\u90fd\u6709 return \u8bed\u53e5\u65f6\uff0ctry \u8bed\u53e5\u5757\u4e2d\u7684 return \u8bed\u53e5\u4f1a\u88ab\u5ffd\u7565\u3002\u8fd9\u662f\u56e0\u4e3a try \u8bed\u53e5\u4e2d\u7684 return \u8fd4\u56de\u503c\u4f1a\u5148\u88ab\u6682\u5b58\u5728\u4e00\u4e2a\u672c\u5730\u53d8\u91cf\u4e2d\uff0c\u5f53\u6267\u884c\u5230 finally \u8bed\u53e5\u4e2d\u7684 return \u4e4b\u540e\uff0c\u8fd9\u4e2a\u672c\u5730\u53d8\u91cf\u7684\u503c\u5c31\u53d8\u4e3a\u4e86 finally \u8bed\u53e5\u4e2d\u7684 return \u8fd4\u56de\u503c\u3002<\/p>\n

<\/span>\u4ec0\u4e48\u662f\u6cdb\u578b\uff1f\u6709\u4ec0\u4e48\u4f5c\u7528\uff1f<\/span><\/h3>\n

Java \u6cdb\u578b\uff08Generics\uff09 \u662f JDK 5 \u4e2d\u5f15\u5165\u7684\u4e00\u4e2a\u65b0\u7279\u6027\u3002\u4f7f\u7528\u6cdb\u578b\u53c2\u6570\uff0c\u53ef\u4ee5\u589e\u5f3a\u4ee3\u7801\u7684\u53ef\u8bfb\u6027\u4ee5\u53ca\u7a33\u5b9a\u6027\u3002<\/p>\n

<\/span>\u6cdb\u578b\u7684\u4f7f\u7528\u65b9\u5f0f\u6709\u54ea\u51e0\u79cd\uff1f<\/span><\/h3>\n

1.\u6cdb\u578b\u7c7b\uff1a<\/strong><\/p>\n

\/\/\u6b64\u5904T\u53ef\u4ee5\u968f\u4fbf\u5199\u4e3a\u4efb\u610f\u6807\u8bc6\uff0c\u5e38\u89c1\u7684\u5982T\u3001E\u3001K\u3001V\u7b49\u5f62\u5f0f\u7684\u53c2\u6570\u5e38\u7528\u4e8e\u8868\u793a\u6cdb\u578b\n\/\/\u5728\u5b9e\u4f8b\u5316\u6cdb\u578b\u7c7b\u65f6\uff0c\u5fc5\u987b\u6307\u5b9aT\u7684\u5177\u4f53\u7c7b\u578b\npublic class Generic<T>{\n\n    private T key;\n\n    public Generic(T key) {\n        this.key = key;\n    }\n\n    public T getKey(){\n        return key;\n    }\n}<\/code><\/pre>\n
2.\u6cdb\u578b\u63a5\u53e3\uff1a<\/strong><\/p>\n
public interface Generator<T> {\n    public T method();\n}\n\n\u5b9e\u73b0\u6cdb\u578b\u63a5\u53e3\uff0c\u4e0d\u6307\u5b9a\u7c7b\u578b\uff1a\nclass GeneratorImpl<T> implements Generator<T>{\n    @Override\n    public T method() {\n        return null;\n    }\n}\n\u5b9e\u73b0\u6cdb\u578b\u63a5\u53e3\uff0c\u6307\u5b9a\u7c7b\u578b\uff1a\nclass GeneratorImpl implements Generator<String> {\n    @Override\n    public String method() {\n        return "hello";\n    }\n}<\/code><\/pre>\n
3.\u6cdb\u578b\u65b9\u6cd5\uff1a<\/strong><\/p>\n
   public static < E > void printArray( E[] inputArray )\n   {\n         for ( E element : inputArray ){\n            System.out.printf( "%s ", element );\n         }\n         System.out.println();\n    }<\/code><\/pre>\n
<\/span>\u4ec0\u4e48\u662f\u53cd\u5c04\uff1f<\/span><\/h3>\n
\u7b80\u5355\u6765\u8bf4\uff0cJava \u53cd\u5c04 (Reflection) \u662f\u4e00\u79cd\u5728\u7a0b\u5e8f\u8fd0\u884c\u65f6\uff0c\u52a8\u6001\u5730\u83b7\u53d6\u7c7b\u7684\u4fe1\u606f\u5e76\u64cd\u4f5c\u7c7b\u6216\u5bf9\u8c61\uff08\u65b9\u6cd5\u3001\u5c5e\u6027\uff09\u7684\u80fd\u529b\u3002<\/p>\n
<\/span>\u53cd\u5c04\u6709\u4ec0\u4e48\u4f18\u7f3a\u70b9\uff1f<\/span><\/h3>\n
\u4f18\u70b9\uff1a<\/strong>
\n\u7075\u6d3b\u6027\u548c\u52a8\u6001\u6027\uff1a<\/strong>\u53cd\u5c04\u5141\u8bb8\u7a0b\u5e8f\u5728\u8fd0\u884c\u65f6\u52a8\u6001\u5730\u52a0\u8f7d\u7c7b\u3001\u521b\u5efa\u5bf9\u8c61\u3001\u8c03\u7528\u65b9\u6cd5\u548c\u8bbf\u95ee\u5b57\u6bb5\u3002\u8fd9\u6837\u53ef\u4ee5\u6839\u636e\u5b9e\u9645\u9700\u6c42\uff08\u5982\u914d\u7f6e\u6587\u4ef6\u3001\u7528\u6237\u8f93\u5165\u3001\u6ce8\u89e3\u7b49\uff09\u52a8\u6001\u5730\u9002\u5e94\u548c\u6269\u5c55\u7a0b\u5e8f\u7684\u884c\u4e3a\uff0c\u663e\u8457\u63d0\u9ad8\u4e86\u7cfb\u7edf\u7684\u7075\u6d3b\u6027\u548c\u9002\u5e94\u6027\u3002
\n\u6846\u67b6\u5f00\u53d1\u7684\u57fa\u7840<\/strong>\uff1a\u8bb8\u591a\u73b0\u4ee3 Java \u6846\u67b6\uff08\u5982 Spring\u3001Hibernate\u3001MyBatis\uff09\u90fd\u5927\u91cf\u4f7f\u7528\u53cd\u5c04\u6765\u5b9e\u73b0\u4f9d\u8d56\u6ce8\u5165\uff08DI\uff09\u3001\u9762\u5411\u5207\u9762\u7f16\u7a0b\uff08AOP\uff09\u3001\u5bf9\u8c61\u5173\u7cfb\u6620\u5c04\uff08ORM\uff09\u3001\u6ce8\u89e3\u5904\u7406\u7b49\u6838\u5fc3\u529f\u80fd\u3002\u53cd\u5c04\u662f\u5b9e\u73b0\u8fd9\u4e9b\u201c\u9b54\u6cd5\u201d\u529f\u80fd\u4e0d\u53ef\u6216\u7f3a\u7684\u57fa\u7840\u5de5\u5177\u3002
\n\u89e3\u8026\u5408\u548c\u901a\u7528\u6027<\/strong>\uff1a\u901a\u8fc7\u53cd\u5c04\uff0c\u53ef\u4ee5\u7f16\u5199\u66f4\u901a\u7528\u3001\u53ef\u91cd\u7528\u548c\u9ad8\u5ea6\u89e3\u8026\u7684\u4ee3\u7801\uff0c\u964d\u4f4e\u6a21\u5757\u4e4b\u95f4\u7684\u4f9d\u8d56\u3002\u4f8b\u5982\uff0c\u53ef\u4ee5\u901a\u8fc7\u53cd\u5c04\u5b9e\u73b0\u901a\u7528\u7684\u5bf9\u8c61\u62f7\u8d1d\u3001\u5e8f\u5217\u5316\u3001Bean \u5de5\u5177\u7b49\u3002
\n\u7f3a\u70b9\uff1a<\/strong>
\n\u6027\u80fd\u5f00\u9500<\/strong>\uff1a\u53cd\u5c04\u64cd\u4f5c\u901a\u5e38\u6bd4\u76f4\u63a5\u4ee3\u7801\u8c03\u7528\u8981\u6162\u3002\u56e0\u4e3a\u6d89\u53ca\u5230\u52a8\u6001\u7c7b\u578b\u89e3\u6790\u3001\u65b9\u6cd5\u67e5\u627e\u4ee5\u53ca JIT \u7f16\u8bd1\u5668\u7684\u4f18\u5316\u53d7\u9650\u7b49\u56e0\u7d20\u3002\u4e0d\u8fc7\uff0c\u5bf9\u4e8e\u5927\u591a\u6570\u6846\u67b6\u573a\u666f\uff0c\u8fd9\u79cd\u6027\u80fd\u635f\u8017\u901a\u5e38\u662f\u53ef\u4ee5\u63a5\u53d7\u7684\uff0c\u6216\u8005\u6846\u67b6\u672c\u8eab\u4f1a\u505a\u4e00\u4e9b\u7f13\u5b58\u4f18\u5316\u3002
\n\u5b89\u5168\u6027\u95ee\u9898<\/strong>\uff1a\u53cd\u5c04\u53ef\u4ee5\u7ed5\u8fc7 Java \u8bed\u8a00\u7684\u8bbf\u95ee\u63a7\u5236\u673a\u5236\uff08\u5982\u8bbf\u95ee private \u5b57\u6bb5\u548c\u65b9\u6cd5\uff09\uff0c\u7834\u574f\u4e86\u5c01\u88c5\u6027\uff0c\u53ef\u80fd\u5bfc\u81f4\u6570\u636e\u6cc4\u9732\u6216\u7a0b\u5e8f\u88ab\u6076\u610f\u7be1\u6539\u3002\u6b64\u5916\uff0c\u8fd8\u53ef\u4ee5\u7ed5\u8fc7\u6cdb\u578b\u68c0\u67e5\uff0c\u5e26\u6765\u7c7b\u578b\u5b89\u5168\u9690\u60a3\u3002
\n\u4ee3\u7801\u53ef\u8bfb\u6027\u548c\u7ef4\u62a4\u6027<\/strong>\uff1a\u8fc7\u5ea6\u4f7f\u7528\u53cd\u5c04\u4f1a\u4f7f\u4ee3\u7801\u53d8\u5f97\u590d\u6742\u3001\u96be\u4ee5\u7406\u89e3\u548c\u8c03\u8bd5\u3002\u9519\u8bef\u901a\u5e38\u5728\u8fd0\u884c\u65f6\u624d\u4f1a\u66b4\u9732\uff0c\u4e0d\u50cf\u7f16\u8bd1\u671f\u9519\u8bef\u90a3\u6837\u5bb9\u6613\u53d1\u73b0\u3002<\/p>\n
<\/span>\u4f55\u8c13 SPI?<\/span><\/h3>\n
SPI \u5373 Service Provider Interface \uff0c\u5b57\u9762\u610f\u601d\u5c31\u662f\uff1a\u201c\u670d\u52a1\u63d0\u4f9b\u8005\u7684\u63a5\u53e3\u201d\uff0c\u6211\u7684\u7406\u89e3\u662f\uff1a\u4e13\u95e8\u63d0\u4f9b\u7ed9\u670d\u52a1\u63d0\u4f9b\u8005\u6216\u8005\u6269\u5c55\u6846\u67b6\u529f\u80fd\u7684\u5f00\u53d1\u8005\u53bb\u4f7f\u7528\u7684\u4e00\u4e2a\u63a5\u53e3\u3002SPI \u5c06\u670d\u52a1\u63a5\u53e3\u548c\u5177\u4f53\u7684\u670d\u52a1\u5b9e\u73b0\u5206\u79bb\u5f00\u6765\uff0c\u5c06\u670d\u52a1\u8c03\u7528\u65b9\u548c\u670d\u52a1\u5b9e\u73b0\u8005\u89e3\u8026\uff0c\u80fd\u591f\u63d0\u5347\u7a0b\u5e8f\u7684\u6269\u5c55\u6027\u3001\u53ef\u7ef4\u62a4\u6027\u3002\u4fee\u6539\u6216\u8005\u66ff\u6362\u670d\u52a1\u5b9e\u73b0\u5e76\u4e0d\u9700\u8981\u4fee\u6539\u8c03\u7528\u65b9\u3002\u5f88\u591a\u6846\u67b6\u90fd\u4f7f\u7528\u4e86 Java \u7684 SPI \u673a\u5236\uff0c\u6bd4\u5982\uff1aSpring \u6846\u67b6\u3001\u6570\u636e\u5e93\u52a0\u8f7d\u9a71\u52a8\u3001\u65e5\u5fd7\u63a5\u53e3\u3001\u4ee5\u53ca Dubbo \u7684\u6269\u5c55\u5b9e\u73b0\u7b49\u7b49\u3002<\/p>\n
<\/span>SPI \u548c API \u6709\u4ec0\u4e48\u533a\u522b\uff1f<\/span><\/h3>\n
\"file\"<\/p>\n
\u5f53\u5b9e\u73b0\u65b9\u63d0\u4f9b\u4e86\u63a5\u53e3\u548c\u5b9e\u73b0\uff0c\u6211\u4eec\u53ef\u4ee5\u901a\u8fc7\u8c03\u7528\u5b9e\u73b0\u65b9\u7684\u63a5\u53e3\u4ece\u800c\u62e5\u6709\u5b9e\u73b0\u65b9\u7ed9\u6211\u4eec\u63d0\u4f9b\u7684\u80fd\u529b\uff0c\u8fd9\u5c31\u662f API<\/strong>\u3002\u8fd9\u79cd\u60c5\u51b5\u4e0b\uff0c\u63a5\u53e3\u548c\u5b9e\u73b0\u90fd\u662f\u653e\u5728\u5b9e\u73b0\u65b9\u7684\u5305\u4e2d\u3002\u8c03\u7528\u65b9\u901a\u8fc7\u63a5\u53e3\u8c03\u7528\u5b9e\u73b0\u65b9\u7684\u529f\u80fd\uff0c\u800c\u4e0d\u9700\u8981\u5173\u5fc3\u5177\u4f53\u7684\u5b9e\u73b0\u7ec6\u8282\u3002
\n\u5f53\u63a5\u53e3\u5b58\u5728\u4e8e\u8c03\u7528\u65b9\u8fd9\u8fb9\u65f6\uff0c\u8fd9\u5c31\u662f SPI<\/strong> \u3002\u7531\u63a5\u53e3\u8c03\u7528\u65b9\u786e\u5b9a\u63a5\u53e3\u89c4\u5219\uff0c\u7136\u540e\u7531\u4e0d\u540c\u7684\u5382\u5546\u6839\u636e\u8fd9\u4e2a\u89c4\u5219\u5bf9\u8fd9\u4e2a\u63a5\u53e3\u8fdb\u884c\u5b9e\u73b0\uff0c\u4ece\u800c\u63d0\u4f9b\u670d\u52a1\u3002<\/p>\n
<\/span>SPI \u7684\u4f18\u7f3a\u70b9\uff1f<\/span><\/h3>\n
1\u3001\u9700\u8981\u904d\u5386\u52a0\u8f7d\u6240\u6709\u7684\u5b9e\u73b0\u7c7b\uff0c\u4e0d\u80fd\u505a\u5230\u6309\u9700\u52a0\u8f7d\uff0c\u8fd9\u6837\u6548\u7387\u8fd8\u662f\u76f8\u5bf9\u8f83\u4f4e\u7684\u3002
\n2\u3001\u5f53\u591a\u4e2a ServiceLoader \u540c\u65f6 load \u65f6\uff0c\u4f1a\u6709\u5e76\u53d1\u95ee\u9898\u3002<\/p>\n
<\/span>\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316<\/span><\/h3>\n
\u5982\u679c\u6211\u4eec\u9700\u8981\u6301\u4e45\u5316 Java \u5bf9\u8c61\u6bd4\u5982\u5c06 Java \u5bf9\u8c61\u4fdd\u5b58\u5728\u6587\u4ef6\u4e2d\uff0c\u6216\u8005\u5728\u7f51\u7edc\u4f20\u8f93 Java \u5bf9\u8c61\uff0c\u8fd9\u4e9b\u573a\u666f\u90fd\u9700\u8981\u7528\u5230\u5e8f\u5217\u5316\u3002
\n\u5e8f\u5217\u5316\uff1a<\/strong>\u5c06\u6570\u636e\u7ed3\u6784\u6216\u5bf9\u8c61\u8f6c\u6362\u6210\u53ef\u4ee5\u5b58\u50a8\u6216\u4f20\u8f93\u7684\u5f62\u5f0f\uff0c\u901a\u5e38\u662f\u4e8c\u8fdb\u5236\u5b57\u8282\u6d41\uff0c\u4e5f\u53ef\u4ee5\u662f JSON, XML \u7b49\u6587\u672c\u683c\u5f0f
\n\u53cd\u5e8f\u5217\u5316<\/strong>\uff1a\u5c06\u5728\u5e8f\u5217\u5316\u8fc7\u7a0b\u4e2d\u6240\u751f\u6210\u7684\u6570\u636e\u8f6c\u6362\u4e3a\u539f\u59cb\u6570\u636e\u7ed3\u6784\u6216\u8005\u5bf9\u8c61\u7684\u8fc7\u7a0b<\/p>\n
<\/span>\u5e8f\u5217\u5316\u534f\u8bae\u5bf9\u5e94\u4e8e TCP\/IP 4 \u5c42\u6a21\u578b\u7684\u54ea\u4e00\u5c42\uff1f<\/span><\/h3>\n
\u6211\u4eec\u77e5\u9053\u7f51\u7edc\u901a\u4fe1\u7684\u53cc\u65b9\u5fc5\u987b\u8981\u91c7\u7528\u548c\u9075\u5b88\u76f8\u540c\u7684\u534f\u8bae\u3002TCP\/IP \u56db\u5c42\u6a21\u578b\u662f\u4e0b\u9762\u8fd9\u6837\u7684\uff0c\u5e8f\u5217\u5316\u534f\u8bae\u5c5e\u4e8e\u54ea\u4e00\u5c42\u5462\uff1f
\n\u5e94\u7528\u5c42
\n\u4f20\u8f93\u5c42
\n\u7f51\u7edc\u5c42
\n\u7f51\u7edc\u63a5\u53e3\u5c42<\/strong>
\n\"file\"<\/p>\n
\u5982\u4e0a\u56fe\u6240\u793a\uff0cOSI \u4e03\u5c42\u534f\u8bae\u6a21\u578b\u4e2d\uff0c\u8868\u793a\u5c42\u505a\u7684\u4e8b\u60c5\u4e3b\u8981\u5c31\u662f\u5bf9\u5e94\u7528\u5c42\u7684\u7528\u6237\u6570\u636e\u8fdb\u884c\u5904\u7406\u8f6c\u6362\u4e3a\u4e8c\u8fdb\u5236\u6d41\u3002\u53cd\u8fc7\u6765\u7684\u8bdd\uff0c\u5c31\u662f\u5c06\u4e8c\u8fdb\u5236\u6d41\u8f6c\u6362\u6210\u5e94\u7528\u5c42\u7684\u7528\u6237\u6570\u636e\u3002\u8fd9\u4e0d\u5c31\u5bf9\u5e94\u7684\u662f\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316\u4e48\uff1f\u56e0\u4e3a\uff0cOSI \u4e03\u5c42\u534f\u8bae\u6a21\u578b\u4e2d\u7684\u5e94\u7528\u5c42\u3001\u8868\u793a\u5c42\u548c\u4f1a\u8bdd\u5c42\u5bf9\u5e94\u7684\u90fd\u662f TCP\/IP \u56db\u5c42\u6a21\u578b\u4e2d\u7684\u5e94\u7528\u5c42<\/strong>\uff0c\u6240\u4ee5\u5e8f\u5217\u5316\u534f\u8bae\u5c5e\u4e8e TCP\/IP \u534f\u8bae\u5e94\u7528\u5c42\u7684\u4e00\u90e8\u5206\u3002<\/p>\n
<\/span>\u5982\u679c\u6709\u4e9b\u5b57\u6bb5\u4e0d\u60f3\u8fdb\u884c\u5e8f\u5217\u5316\u600e\u4e48\u529e\uff1f<\/span><\/h3>\n
\u5bf9\u4e8e\u4e0d\u60f3\u8fdb\u884c\u5e8f\u5217\u5316\u7684\u53d8\u91cf\uff0c\u4f7f\u7528 transient<\/strong> \u5173\u952e\u5b57\u4fee\u9970\u3002
\ntransient \u5173\u952e\u5b57\u7684\u4f5c\u7528\u662f<\/strong>\uff1a\u963b\u6b62\u5b9e\u4f8b\u4e2d\u90a3\u4e9b\u7528\u6b64\u5173\u952e\u5b57\u4fee\u9970\u7684\u7684\u53d8\u91cf\u5e8f\u5217\u5316\uff1b\u5f53\u5bf9\u8c61\u88ab\u53cd\u5e8f\u5217\u5316\u65f6\uff0c\u88ab transient \u4fee\u9970\u7684\u53d8\u91cf\u503c\u4e0d\u4f1a\u88ab\u6301\u4e45\u5316\u548c\u6062\u590d\u3002<\/p>\n
\u5173\u4e8e transient \u8fd8\u6709\u51e0\u70b9\u6ce8\u610f\uff1a<\/strong>
\ntransient \u53ea\u80fd\u4fee\u9970\u53d8\u91cf\uff0c\u4e0d\u80fd\u4fee\u9970\u7c7b\u548c\u65b9\u6cd5\u3002
\ntransient \u4fee\u9970\u7684\u53d8\u91cf\uff0c\u5728\u53cd\u5e8f\u5217\u5316\u540e\u53d8\u91cf\u503c\u5c06\u4f1a\u88ab\u7f6e\u6210\u7c7b\u578b\u7684\u9ed8\u8ba4\u503c\u3002\u4f8b\u5982\uff0c\u5982\u679c\u662f\u4fee\u9970 int \u7c7b\u578b\uff0c\u90a3\u4e48\u53cd\u5e8f\u5217\u540e\u7ed3\u679c\u5c31\u662f 0\u3002
\nstatic \u53d8\u91cf\u56e0\u4e3a\u4e0d\u5c5e\u4e8e\u4efb\u4f55\u5bf9\u8c61(Object)\uff0c\u6240\u4ee5\u65e0\u8bba\u6709\u6ca1\u6709 transient \u5173\u952e\u5b57\u4fee\u9970\uff0c\u5747\u4e0d\u4f1a\u88ab\u5e8f\u5217\u5316\u3002<\/p>\n
<\/span>\u4e3a\u4ec0\u4e48\u4e0d\u63a8\u8350\u4f7f\u7528 JDK \u81ea\u5e26\u7684\u5e8f\u5217\u5316\uff1f<\/span><\/h3>\n
\u4e0d\u652f\u6301\u8de8\u8bed\u8a00\u8c03\u7528 :<\/strong> \u5982\u679c\u8c03\u7528\u7684\u662f\u5176\u4ed6\u8bed\u8a00\u5f00\u53d1\u7684\u670d\u52a1\u7684\u65f6\u5019\u5c31\u4e0d\u652f\u6301\u4e86\u3002
\n\u6027\u80fd\u5dee\uff1a<\/strong>\u76f8\u6bd4\u4e8e\u5176\u4ed6\u5e8f\u5217\u5316\u6846\u67b6\u6027\u80fd\u66f4\u4f4e\uff0c\u4e3b\u8981\u539f\u56e0\u662f\u5e8f\u5217\u5316\u4e4b\u540e\u7684\u5b57\u8282\u6570\u7ec4\u4f53\u79ef\u8f83\u5927\uff0c\u5bfc\u81f4\u4f20\u8f93\u6210\u672c\u52a0\u5927\u3002
\n\u5b58\u5728\u5b89\u5168\u95ee\u9898<\/strong>\uff1a\u5e8f\u5217\u5316\u548c\u53cd\u5e8f\u5217\u5316\u672c\u8eab\u5e76\u4e0d\u5b58\u5728\u95ee\u9898\u3002\u4f46\u5f53\u8f93\u5165\u7684\u53cd\u5e8f\u5217\u5316\u7684\u6570\u636e\u53ef\u88ab\u7528\u6237\u63a7\u5236\uff0c\u90a3\u4e48\u653b\u51fb\u8005\u5373\u53ef\u901a\u8fc7\u6784\u9020\u6076\u610f\u8f93\u5165\uff0c\u8ba9\u53cd\u5e8f\u5217\u5316\u4ea7\u751f\u975e\u9884\u671f\u7684\u5bf9\u8c61\uff0c\u5728\u6b64\u8fc7\u7a0b\u4e2d\u6267\u884c\u6784\u9020\u7684\u4efb\u610f\u4ee3\u7801\u3002<\/p>\n
<\/span>I\/O \u6d41\u4e3a\u4ec0\u4e48\u8981\u5206\u4e3a\u5b57\u8282\u6d41\u548c\u5b57\u7b26\u6d41\u5462?<\/span><\/h3>\n
\u95ee\u9898\u672c\u8d28\u60f3\u95ee\uff1a\u4e0d\u7ba1\u662f\u6587\u4ef6\u8bfb\u5199\u8fd8\u662f\u7f51\u7edc\u53d1\u9001\u63a5\u6536\uff0c\u4fe1\u606f\u7684\u6700\u5c0f\u5b58\u50a8\u5355\u5143\u90fd\u662f\u5b57\u8282\uff0c\u90a3\u4e3a\u4ec0\u4e48 I\/O \u6d41\u64cd\u4f5c\u8981\u5206\u4e3a\u5b57\u8282\u6d41\u64cd\u4f5c\u548c\u5b57\u7b26\u6d41\u64cd\u4f5c\u5462\uff1f
\n\u5b57\u7b26\u6d41\u662f\u7531 Java \u865a\u62df\u673a\u5c06\u5b57\u8282\u8f6c\u6362\u5f97\u5230\u7684\uff0c\u8fd9\u4e2a\u8fc7\u7a0b\u8fd8\u7b97\u662f\u6bd4\u8f83\u8017\u65f6\uff1b
\n\u5982\u679c\u6211\u4eec\u4e0d\u77e5\u9053\u7f16\u7801\u7c7b\u578b\u7684\u8bdd\uff0c\u4f7f\u7528\u5b57\u8282\u6d41\u7684\u8fc7\u7a0b\u4e2d\u5f88\u5bb9\u6613\u51fa\u73b0\u4e71\u7801\u95ee\u9898\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"
Exception \u548c Error \u6709\u4ec0\u4e48\u533a\u522b\uff1f \u5728 Java \u4e2d\uff0c\u6240\u6709\u7684\u5f02\u5e38\u90fd\u6709\u4e00\u4e2a\u5171\u540c\u7684\u7956\u5148 java.lang \u5305\u4e2d\u7684 Throwable \u7c7b\u3002Throwable \u7c7b\u6709\u4e24\u4e2a\u91cd\u8981\u7684\u5b50\u7c7b: Exception :\u7a0b\u5e8f\u672c\u8eab\u53ef\u4ee5\u5904\u7406\u7684\u5f02\u5e38\uff0c\u53ef\u4ee5\u901a\u8fc7 catch \u6765\u8fdb\u884c\u6355\u83b7\u3002Exception \u53c8\u53ef\u4ee5\u5206\u4e3a Checked Exception (\u53d7\u68c0\u67e5\u5f02\u5e38\uff0c\u5fc5\u987b\u5904\u7406) \u548c Unchecked Excep […]<\/p>\n","protected":false},"author":1,"featured_media":126,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[7],"tags":[],"class_list":["post-124","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-java"],"_links":{"self":[{"href":"https:\/\/yingjun.run\/index.php\/wp-json\/wp\/v2\/posts\/124","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/yingjun.run\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/yingjun.run\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/yingjun.run\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/yingjun.run\/index.php\/wp-json\/wp\/v2\/comments?post=124"}],"version-history":[{"count":2,"href":"https:\/\/yingjun.run\/index.php\/wp-json\/wp\/v2\/posts\/124\/revisions"}],"predecessor-version":[{"id":131,"href":"https:\/\/yingjun.run\/index.php\/wp-json\/wp\/v2\/posts\/124\/revisions\/131"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/yingjun.run\/index.php\/wp-json\/wp\/v2\/media\/126"}],"wp:attachment":[{"href":"https:\/\/yingjun.run\/index.php\/wp-json\/wp\/v2\/media?parent=124"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/yingjun.run\/index.php\/wp-json\/wp\/v2\/categories?post=124"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/yingjun.run\/index.php\/wp-json\/wp\/v2\/tags?post=124"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}