\u6211\u4ee5\u4e3a\u80fd\u50cf\u4f7f\u7528Java\u4e00\u6837\u81ea\u5982\u5730\u4f7f\u7528Kotlin\uff0c\u4f46\u5728\u610f\u60f3\u4e0d\u5230\u7684\u5730\u65b9\u5361\u4f4f\u4e86\uff0c\u6240\u4ee5\u5206\u4eab\u51fa\u6765\u3002<\/p>\n
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\u5728Java\u4e2d\uff0c\u4e0e\u5176\u4ed6\u4e3b\u8981\u7684\u7f16\u7a0b\u8bed\u8a00\u4e0d\u540c\uff0c\u5b58\u5728\u4e00\u79cd\u79f0\u4e3a”\u68c0\u67e5\u5f02\u5e38”\u7684\u5f02\u5e38\u3002”\u68c0\u67e5\u5f02\u5e38”\u548c”\u975e\u68c0\u67e5\u5f02\u5e38”\u4e4b\u95f4\u6709\u4ee5\u4e0b\u533a\u522b\uff1a<\/p>\n
<\/p>\n
<\/p>\n
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\u5982\u679c\u5b58\u5728\u4ee5\u4e0b\u8fd9\u6837\u7684\u65b9\u6cd5\uff0c\u53ea\u6709\u524d\u8005\u4f1a\u51fa\u73b0\u7f16\u8bd1\u9519\u8bef\u3002<\/p>\n
void<\/span> throwIOException<\/span>()<\/span> {<\/span>\r\n throw<\/span> new<\/span> IOException<\/span>();<\/span> \/\/ NG: \u691c\u67fb\u4f8b\u5916\u306a\u306e\u3067try-catch or throws\u304c\u5fc5\u8981<\/span>\r\n}<\/span>\r\n\r\nvoid<\/span> throwNullPointerException<\/span>()<\/span> {<\/span>\r\n throw<\/span> new<\/span> NullPointerException<\/span>();<\/span> \/\/ OK: \u975e\u691c\u67fb\u4f8b\u5916\u306a\u306e\u3067\u30b3\u30f3\u30d1\u30a4\u30eb\u304c\u901a\u308b<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n\u5c1d\u8bd5\u4f7f\u7528try-catch\u5757\u6216throws\u8bed\u53e5\uff0c\u5c31\u53ef\u4ee5\u4f7f\u5f97\u7f16\u8bd1\u901a\u8fc7\u3002<\/p>\n
void<\/span> throwIOException_trycatch<\/span>()<\/span> {<\/span>\r\n try<\/span> {<\/span>\r\n throw<\/span> new<\/span> IOException<\/span>();<\/span>\r\n }<\/span> catch<\/span> (<\/span>IOException<\/span> e<\/span>)<\/span> {}<\/span> \/\/ OK: catch\u3057\u3066\u3044\u308b\u304b\u3089OK<\/span>\r\n}<\/span>\r\n\r\nvoid<\/span> throwIOException_throws<\/span>()<\/span> throws<\/span> IOException<\/span> {<\/span> \/\/ OK: throws\u3067\u4f1d\u64ad\u3055\u305b\u3066\u3044\u308b\u304b\u3089OK<\/span>\r\n throw<\/span> new<\/span> IOException<\/span>();<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\nKotlin\u4e2d\u4e0d\u5b58\u5728\u68c0\u67e5\u5f02\u5e38\u3002<\/h2>\n
\u6b63\u5982\u516c\u5f0f\u6240\u8ff0\uff0cKotlin\u4e2d\u4e0d\u5b58\u5728\u53d7\u68c0\u5f02\u5e38\u3002<\/p>\n
<\/p>\n
\u4e3b\u5f20\u662f\u6307\u79f0\u68c0\u67e5\u4f8b\u5916\u5728\u5b9e\u9645\u4e2d\u901a\u5e38\u88ab\u6d88\u9664\uff0c\u8fd9\u4f1a\u964d\u4f4e\u751f\u4ea7\u6548\u7387\u548c\u4ee3\u7801\u8d28\u91cf\u3002<\/p>\n
\u56e0\u4e3a\u4ee5\u4e0b\u7684\u94fe\u63a5\u6587\u7ae0\u4e5f\u5f88\u6709\u8da3\uff0c\u6240\u4ee5\u5982\u679c\u4f60\u611f\u5174\u8da3\u7684\u8bdd\uff0c\u8bf7\u9605\u8bfb\u4e00\u4e0b\u3002<\/p>\n
<\/p>\n
\u5373\u4f7f\u662f\u53ef\u80fd\u53d1\u751fIOException\u7684\u65b9\u6cd5\uff0c\u5373\u4f7f\u4e0d\u660e\u786e\u6307\u793a\u5f02\u5e38\u53d1\u751f\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7\u7f16\u8bd1\uff0c\u5c31\u50cfJava\u7684\u4f8b\u5b50\u4e00\u6837\u3002<\/p>\n
fun<\/span> throwIOException<\/span>()<\/span> {<\/span>\r\n throw<\/span> IOException<\/span>()<\/span> \/\/ OK<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n\u4f7f\u7528Kotlin + Spring Boot\u65f6\u9700\u8981\u6ce8\u610f\u7684\u95ee\u9898<\/h2>\n
\u73b0\u5728\uff0c\u6211\u4eec\u5df2\u7ecf\u89e3\u91ca\u4e86\u5173\u4e8eJava\u548cKotlin\u68c0\u67e5\u5f02\u5e38\u7684\u90e8\u5206\uff0c\u63a5\u4e0b\u6765\u662f\u6211\u4eec\u9047\u5230\u56f0\u96be\u70b9\u7684\u6838\u5fc3\u3002<\/p>\n
Kotlin\u4e0eSpring Boot\u7684\u5173\u7cfb<\/h3>\n
\u5728Java\u7684\u8457\u540dWeb\u6846\u67b6\u4e2d\uff0c\u6709Spring\u548cSpring Boot\u3002\u7279\u522b\u662fSpring Boot\uff0c\u53ef\u4ee5\u8bf4\u662fJava\u7684Web\u6846\u67b6\u7684\u4e8b\u5b9e\u6807\u51c6\uff0c\u5176\u666e\u53ca\u7387\u975e\u5e38\u9ad8\u3002<\/p>\n
\u5728\u4e2d\u56fd\uff0cSpring Boot\u8fd9\u6837\u7684\u6846\u67b6\u53ef\u4ee5\u4f7f\u7528Kotlin\u6765\u5f00\u53d1\uff0c\u8fd9\u6837\u5c31\u53ef\u4ee5\u4e0d\u7528\u5176\u4ed6\u7684Kotlin\u6846\u67b6\u800c\u76f4\u63a5\u4f7f\u7528Spring Boot\u7684\u60c5\u51b5\u4e5f\u5f88\u591a\u3002<\/p>\n
\u5728Spring Boot\u4e2d\u7684\u4e8b\u52a1\u7ba1\u7406<\/h3>\n
\u5728Spring Boot\u4e2d\uff0c\u53ea\u9700\u4f7f\u7528@Transactional\u6ce8\u89e3\u5c31\u53ef\u4ee5\u8fdb\u884c\u4e8b\u52a1\u7ba1\u7406\u3002<\/p>\n
@Transactional<\/span> \/\/ \u3053\u308c\u3060\u3051\u3067OK<\/span>\r\nvoid<\/span> exsample<\/span>()<\/span> {<\/span>\r\n \/\/ \u306a\u3093\u3089\u304b\u306e\u51e6\u7406<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n\u5728\u8c03\u7528\u65b9\u6cd5\u65f6\u5f00\u59cb\u4e8b\u52a1\uff08BEGIN\uff09\uff0c\u5982\u679c\u53d1\u751f\u6307\u5b9a\u7684\u5f02\u5e38\u5219\u8fdb\u884c\u56de\u6eda\uff08ROLLBACK\uff09\uff0c\u5426\u5219\u8fdb\u884c\u63d0\u4ea4\uff08COMMIT\uff09\u3002<\/p>\n
\u5982\u679c\u60f3\u8981\u8fdb\u884c\u56de\u6eda\u7684\u5f02\u5e38\u53ef\u4ee5\u901a\u8fc7rollbackFor\u9009\u9879\u7b49\u8fdb\u884c\u6307\u5b9a\uff0c\u5982\u679c\u672a\u6307\u5b9a\u7684\u8bdd\uff0cJava\u7684\u53d7\u68c0\u5f02\u5e38\u5c06\u88ab\u6392\u9664\u5728\u5916\u3002\uff08\u53c2\u8003\u6587\u6863\uff09<\/p>\n
\t\/**\r\n\t * ...\u7701\u7565...\r\n\t * <p>By default, a transaction will be rolled back on {@link RuntimeException}\r\n\t * and {@link Error} but not on checked exceptions (business exceptions). See\r\n\t * {@link org.springframework.transaction.interceptor.DefaultTransactionAttribute#rollbackOn(Throwable)}\r\n\t * for a detailed explanation.\r\n\t * ...\u7701\u7565...\r\n\t *\/<\/span>\r\n\tClass<\/span><?<\/span> extends<\/span> Throwable<\/span>>[]<\/span> rollbackFor<\/span>()<\/span> default<\/span> {};<\/span>\r\n<\/code><\/pre>\n\u5728\u8fd9\u79cd\u9ed8\u8ba4\u60c5\u51b5\u4e0b\uff0cJava\u7684\u68c0\u67e5\u5f02\u5e38\u88ab\u6392\u9664\u5728\u5916\uff0c\u8fd9\u5c06\u5bfc\u81f4\u9677\u9631\u3002<\/p>\n
Kotlin\u4e2d\u7684@Transactional\u4e3a\u4ec0\u4e48\u662f\u9677\u9631\u7684\u539f\u56e0<\/h3>\n
\u7531\u4e8e@Transactional\u7684\u884c\u4e3a\u5728Java\u548cKotlin\u4e2d\u662f\u76f8\u540c\u7684\uff0c\u6240\u4ee5\u4e4d\u4e00\u770b\uff0c\u5728Java\u4e2d\u6ca1\u6709\u95ee\u9898\uff0c\u90a3\u4e48\u5728Kotlin\u4e2d\u4e5f\u4e0d\u4f1a\u6709\u95ee\u9898\u3002\u7136\u800c\uff0c\u5728\u8fd9\u91cc\uff0c\u201cKotlin\u4e0d\u5b58\u5728\u68c0\u67e5\u5f02\u5e38 = \u4e0d\u9700\u8981\u5904\u7406Java\u7684\u68c0\u67e5\u5f02\u5e38\u201d\u8fd9\u79cd\u8bed\u8a00\u89c4\u8303\u8d77\u4f5c\u7528\u3002<\/p>\n
\u5728Java\u4e2d\uff0c\u5982\u679c\u53d1\u751f\u68c0\u67e5\u5f02\u5e38\uff0c\u5fc5\u987b\u901a\u8fc7try-catch\u6216throws\u6765\u5904\u7406\uff0c\u8fd9\u6837\u5373\u4f7f\u4e0d\u9700\u8981\u56de\u6eda\uff0c\u4e5f\u53ef\u4ee5\u9002\u5f53\u5730\u4f7f\u7528try-catch\u8fdb\u884c\u5904\u7406\u6216\u660e\u786e\u5730\u4f7f\u7528throws\u8fdb\u884c\u5904\u7406\u3002\u5373\u4f7f\u5e0c\u671b\u8fdb\u884c\u56de\u6eda\uff0c\u4e5f\u53ef\u4ee5\u901a\u8fc7\u5c06\u5176\u8f6c\u6362\u4e3aRuntimeException\u5e76\u4f7f\u7528try-catch\uff0c\u6216\u8005\u660e\u786e\u5730\u81ea\u5b9a\u4e49rollbackFor\u7b49\u65b9\u5f0f\u8fdb\u884c\u5904\u7406\u3002<\/p>\n
\u4f7f\u7528Kotlin\u8fdb\u884c@Transactional\u65f6\u6700\u5927\u7684\u56f0\u6270\u662f\u65e0\u6cd5\u901a\u8fc7\u7f16\u8bd1\u9519\u8bef\u7b49\u65b9\u5f0f\u610f\u8bc6\u5230\u4f1a\u53d1\u751f\u54ea\u4e9b\u5f02\u5e38\uff08\u5c24\u5176\u662fJava\u7684\u68c0\u67e5\u5f02\u5e38\u4e2d\u7684\u5f02\u5e38\u7c7b\u578b\uff09\u3002\u9664\u975e\u660e\u786e\u5730\u629b\u51fa\u7684\u5f02\u5e38\uff0c\u5426\u5219\u5728\u901a\u5e38\u5f00\u53d1\u65f6\u4f1a\u4f7f\u7528\u8bb8\u591a\u5e93\uff0c\u56e0\u6b64\u5f88\u96be\u5b8c\u5168\u4e86\u89e3\u5e93\u4f1a\u629b\u51fa\u54ea\u4e9b\u5f02\u5e38\u3002<\/p>\n
\/\/ Java\u3067\u306f\u691c\u67fb\u4f8b\u5916\u306e\u51e6\u7406\u304c\u5fc5\u9808\u306a\u305f\u3081\u3001\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u306b\u306a\u3063\u3066\u304f\u308c\u308b<\/span>\r\n@Transactional<\/span>\r\nvoid<\/span> throwException<\/span>()<\/span> {<\/span>\r\n \/\/ Java\u306e\u691c\u67fb\u4f8b\u5916\u304c\u767a\u751f\u3059\u308b\u51e6\u7406\u3084\u30e9\u30a4\u30d6\u30e9\u30ea\u306a\u3069\u306e\u547c\u3073\u51fa\u3057<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n\/\/ Kotlin\u3067\u306f\u691c\u67fb\u4f8b\u5916\u3068\u3044\u3046\u6982\u5ff5\u304c\u306a\u3044\u305f\u3081\u3053\u306e\u307e\u307e\u3067\u3082\u30b3\u30f3\u30d1\u30a4\u30eb\u30a8\u30e9\u30fc\u306b\u306a\u3089\u305a\u3001\u5b9f\u884c\u6642\u306b@Transactional\u3067\u30ed\u30fc\u30eb\u30d0\u30c3\u30af\u3055\u308c\u305a\u30b3\u30df\u30c3\u30c8\u3055\u308c\u3066\u3057\u307e\u3046<\/span>\r\n@Transactional<\/span>\r\nfun<\/span> throwException<\/span>()<\/span> {<\/span>\r\n \/\/ Java\u306e\u691c\u67fb\u4f8b\u5916\u304c\u767a\u751f\u3059\u308b\u51e6\u7406\u3084\u30e9\u30a4\u30d6\u30e9\u30ea\u306a\u3069\u306e\u547c\u3073\u51fa\u3057<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\nKotlin + Spring Boot\u7684\u8d44\u6599\u76f8\u5bf9\u8f83\u5c11\uff0c\u5927\u591a\u6570\u4eba\u4f1a\u6839\u636eJava + Spring Boot\u7684\u8d44\u6599\u8fdb\u884c\u5f00\u53d1\u3002\u7531\u4e8e\u5927\u90e8\u5206\u8d44\u6599\u90fd\u662f\u5173\u4e8e\u201c\u5982\u679c\u6dfb\u52a0@Transactional\u6ce8\u89e3\uff0c\u5c31\u53ef\u4ee5\u8fdb\u884c\u4e8b\u52a1\u7ba1\u7406\u201d\uff0c\u6240\u4ee5\u5f88\u5bb9\u6613\u5728\u4f7f\u7528Kotlin\u65f6\u5ffd\u89c6\u4e86\u8fd9\u79cd\u9677\u9631\u3002<\/p>\n
\u6700\u540e<\/h2>\n
Kotlin\u4f5c\u4e3aJava\u7684\u66ff\u4ee3\u8bed\u8a00\u5907\u53d7\u5173\u6ce8\u3002\u5b83\u5177\u6709\u7c7b\u4f3c\u4e8eJava\u7684\u4f7f\u7528\u4f53\u9a8c\uff0c\u53ef\u4ee5\u51cf\u5c11\u4ee3\u7801\u91cf\u5e76\u5e26\u6765\u8bf8\u5982\u7a7a\u503c\u5b89\u5168\u7b49\u4f18\u70b9\u3002\u800c\u4e14\uff0c\u5b83\u8fd8\u5177\u6709\u8f83\u9ad8\u7684\u517c\u5bb9\u6027\uff0c\u53ef\u4ee5\u9010\u6b65\u5c06Java\u4ee3\u7801\u66ff\u6362\u4e3aKotlin\uff0c\u6216\u8005\u76f4\u63a5\u4f7f\u7528Java\u5e93\u3002<\/p>\n
\u7136\u800c\uff0c\u5b83\u4ecd\u7136\u662f\u4e00\u79cd\u5b8c\u5168\u4e0d\u540c\u7684\u8bed\u8a00\u3002\u5982\u679c\u6211\u4eec\u4ec5\u4ec5\u51ed\u611f\u89c9\u4f7f\u7528\uff0c\u53ef\u80fd\u4f1a\u5728\u610f\u60f3\u4e0d\u5230\u7684\u5730\u65b9\u78b0\u58c1\uff0c\u6240\u4ee5\u8bf7\u786e\u4fdd\u6b63\u786e\u7406\u89e3\u8bed\u8a00\u89c4\u8303\u540e\u518d\u4f7f\u7528\u3002<\/p>\n
\u60a0\u8c08<\/h2>\n\u4ee5Java\u5b57\u8282\u7801\u6765\u770b\uff0cthrows\u4f3c\u4e4e\u662f\u4e0d\u5fc5\u8981\u7684\u3002<\/h3>\n
\u6211\u5728\u7814\u7a76\u5728 Kotlin \u4e2d\u629b\u51fa\u5f02\u5e38\u65f6\u4e0e Java \u548c\u5b57\u8282\u7801\u4e4b\u95f4\u7684\u5dee\u5f02\uff0c\u7136\u800c\uff0c\u4f3c\u4e4e\u65e0\u8bba\u5b57\u8282\u7801\u662f\u5426\u6709 throws \u58f0\u660e\uff0c\u5b83\u90fd\u4e0d\u4f1a\u5f71\u54cd\u7a0b\u5e8f\u7684\u8fd0\u884c\u3002<\/p>\n
\u6211\u5e0c\u671b\u4ee5\u4e0b\u7684Java\/Kotlin\u7c7b\u751f\u6210\u76f8\u540c\u7684\u5b57\u8282\u7801\uff08\u5373\u5728\u751f\u6210\u5b57\u8282\u7801\u65f6\uff0cKotlin\u4f1a\u81ea\u52a8\u6dfb\u52a0throws\uff09\uff0c\u4f46\u4e8b\u5b9e\u5e76\u975e\u5982\u6b64\u3002<\/p>\n
public<\/span> final<\/span> class<\/span> JavaSample<\/span> {<\/span>\r\n public<\/span> final<\/span> void<\/span> throwIOException<\/span>()<\/span> throws<\/span> IOException<\/span> {<\/span>\r\n throw<\/span> new<\/span> IOException<\/span>();<\/span>\r\n }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\nclass<\/span> KotlinSample<\/span> {<\/span>\r\n fun<\/span> throwIOException<\/span>()<\/span> {<\/span>\r\n throw<\/span> IOException<\/span>()<\/span>\r\n }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n\u5728\u4f7f\u7528javac\/kotlinc\u5206\u522b\u7f16\u8bd1\u540e\uff0c\u4f7f\u7528javap\u547d\u4ee4\u786e\u8ba4\u5176\u5185\u5bb9\u3002<\/p>\n
$ <\/span>javap -v<\/span> JavaSample \r\n...\u7701\u7565...\r\n public final void throwIOException()<\/span> throws java.io.IOException;<\/span>\r\n descriptor: ()<\/span>V\r\n flags: (<\/span>0x0011)<\/span> ACC_PUBLIC, ACC_FINAL\r\n Code:\r\n stack<\/span>=<\/span>2, locals<\/span>=<\/span>1, args_size<\/span>=<\/span>1\r\n 0: new #7 \/\/ class java\/io\/IOException<\/span>\r\n 3: dup\r\n 4: invokespecial #9 \/\/ Method java\/io\/IOException.\"<init>\":()V<\/span>\r\n 7: athrow\r\n LineNumberTable:\r\n line 7: 0\r\n Exceptions:\r\n throws java.io.IOException\r\n}<\/span>\r\nSourceFile: \"JavaSample.java\"<\/span>\r\n...\u7701\u7565...\r\n\r\n$ <\/span>javap -v<\/span> KotlinSample \r\n...\u7701\u7565...\r\n public final void throwIOException()<\/span>;<\/span> # throws\u304c\u52dd\u624b\u306b\u4ed8\u4e0e\u3055\u308c\u308b\u308f\u3051\u3067\u306f\u306a\u3044<\/span>\r\n descriptor: ()<\/span>V\r\n flags: (<\/span>0x0011)<\/span> ACC_PUBLIC, ACC_FINAL\r\n Code:\r\n stack<\/span>=<\/span>2, locals<\/span>=<\/span>1, args_size<\/span>=<\/span>1\r\n 0: new #13 \/\/ class java\/io\/IOException<\/span>\r\n 3: dup\r\n 4: invokespecial #14 \/\/ Method java\/io\/IOException.\"<init>\":()V<\/span>\r\n 7: athrow\r\n LineNumberTable:\r\n line 7: 0\r\n LocalVariableTable:\r\n Start Length Slot Name Signature\r\n 0 8 0 this Lcom\/example\/KotlinSample;<\/span>\r\n # Java\u306e\u3088\u3046\u306bExceptions\u306e\u8a18\u8f09\u306f\u306a\u3044<\/span>\r\n}<\/span>\r\nSourceFile: \"KotlinSample.kt\"<\/span>\r\n...\u7701\u7565...\r\n<\/code><\/pre>\n\u4ece\u8fd9\u4ef6\u4e8b\u60c5\u4e2d\u53ef\u4ee5\u770b\u51fa\uff0cjavac\u7f16\u8bd1\u5668\u53ea\u662f\u628a\u7f3a\u5c11throws\u89c6\u4e3a\u7f16\u8bd1\u9519\u8bef\uff0c\u800c\u5728\u5b9e\u9645\u7684\u5b57\u8282\u7801\u6267\u884c\u65f6\uff0c\u5e76\u6ca1\u6709\u660e\u786e\u8981\u6c42 throws\u3002<\/p>\n
\u987a\u4fbf\u63d0\u4e00\u4e0b\uff0cKotlin\u4e2d\u5b58\u5728\u7740\u4e00\u4e2a\u7528\u4e8e\u660e\u786e\u6307\u5b9a\u4f1a\u629b\u51fa\u54ea\u4e9b\u5f02\u5e38\u7684@Throws\u6ce8\u89e3\uff0c\u4f7f\u7528\u6b64\u6ce8\u89e3\u540e\uff0c\u5b57\u8282\u7801\u4e2d\u4e5f\u4f1a\u8f93\u51fathrows\u3002<\/p>\n
class<\/span> KotlinSample<\/span> {<\/span>\r\n @Throws<\/span>(<\/span>IOException<\/span>::<\/span>class<\/span>)<\/span>\r\n fun<\/span> throwIOException<\/span>()<\/span> {<\/span>\r\n throw<\/span> IOException<\/span>()<\/span>\r\n }<\/span>\r\n}<\/span>\r\n<\/code><\/pre>\n$ <\/span>javap -v<\/span> KotlinSample \r\n...\u7701\u7565...\r\n public final void throwIOException()<\/span> throws java.io.IOException;<\/span> # throws\u306e\u8a18\u8f09\u304c\u3042\u308b<\/span>\r\n descriptor: ()<\/span>V\r\n flags: (<\/span>0x0011)<\/span> ACC_PUBLIC, ACC_FINAL\r\n Code:\r\n stack<\/span>=<\/span>2, locals<\/span>=<\/span>1, args_size<\/span>=<\/span>1\r\n 0: new #13 \/\/ class java\/io\/IOException<\/span>\r\n 3: dup\r\n 4: invokespecial #14 \/\/ Method java\/io\/IOException.\"<init>\":()V<\/span>\r\n 7: athrow\r\n LineNumberTable:\r\n line 8: 0\r\n LocalVariableTable:\r\n Start Length Slot Name Signature\r\n 0 8 0 this Lcom\/example\/KotlinSample;<\/span>\r\n Exceptions:\r\n throws java.io.IOException # Exceptions\u306e\u8a18\u8f09\u304c\u3042\u308b<\/span>\r\n}<\/span>\r\nSourceFile: \"KotlinSample.kt\"<\/span>\r\n...\u7701\u7565...\r\n<\/code><\/pre>\n\u53c2\u8003\uff1a\u8bf7\u63d0\u4f9b\u4ee5\u4e0b\u5185\u5bb9\u7684\u4e2d\u6587\u672c\u5730\u8bed\u4e49\u5316\u8868\u8fbe\uff0c\u4ec5\u9700\u4e00\u79cd\u9009\u9879 \uff1a<\/p>\n
<\/p>\n
\u5173\u4e8e\u68c0\u67e5\u4f8b\u5916<\/h3>\n
\u6211\u4e4b\u524d\u5e76\u6ca1\u6709\u7279\u522b\u5bf9Java\u4e2d\u7684\u53d7\u68c0\u5f02\u5e38\u611f\u5230\u5947\u602a\uff0c\u56e0\u4e3aJava\u4e2d\u7684\u53d7\u68c0\u5f02\u5e38\u662f\u6700\u957f\u7684\u3002\u4f46\u662f\uff0c\u901a\u8fc7\u8fd9\u6b21\u4e8b\u4ef6\uff0c\u6211\u91cd\u65b0\u5ba1\u89c6\u4e86\u5176\u4ed6\u8bed\u8a00\uff0c\u53d1\u73b0\u8bb8\u591a\u8bed\u8a00\u5e76\u6ca1\u6709\u91c7\u7528\u53d7\u68c0\u5f02\u5e38\uff0c\u8fd9\u8ba9\u6211\u611f\u5230\u60ca\u8bb6\u3002<\/p>\n
\u5728\u6211\u8fdb\u884c\u4e86\u5404\u79cd\u8c03\u67e5\u7814\u7a76\u4e4b\u540e\uff0c\u6211\u4e2a\u4eba\u8ba4\u4e3a\u4e0b\u9762\u8fd9\u7bc7\u6587\u7ae0\u5f88\u6613\u61c2\uff0c\u6240\u4ee5\u6211\u5c06\u5176\u4f5c\u4e3a\u53c2\u8003\u4fe1\u606f\u53d1\u5e03\u51fa\u6765\u3002<\/p>\n
<\/p>\n\u4e0d\u4ec5Spring Boot\uff0cKotlin\u8fd8\u53ef\u4ee5\u76f4\u63a5\u4f7f\u7528\u8bb8\u591aJava\u5e93\u548c\u6846\u67b6\u3002\u56e0\u6b64\uff0c\u5728\u4f7f\u7528\u65f6\u6700\u597d\u8bbe\u5b9a\u5982@Transactional(rollbackFor = [Exception::class])\u4e4b\u7c7b\u7684\u5185\u5bb9\u3002\u7531\u4e8eSpring\u62e5\u6709\u4f17\u591a\u529f\u80fd\uff0c\u6240\u4ee5\u5c06\u201c\u53ea\u9700\u6dfb\u52a0 @Transactional\u201d\u4f5c\u4e3a\u521d\u5b66\u8005\u63a5\u89e6\u4fe1\u606f\u5e76\u4e0d\u6b63\u786e\u3002\u8ba9\u6211\u4eec\u786e\u4fdd\u90a3\u4e9b\u8003\u8651\u67b6\u6784\u7684\u6210\u5458\u5728\u7406\u89e3\u89c4\u8303\u540e\u518d\u4e88\u4ee5\u91c7\u7eb3\u3002@Throws\u4e3b\u8981\u7528\u4e8e\u4ece\u5b58\u5728\u53d7\u68c0\u5f02\u5e38\u7684\u8bed\u8a00\u5982Java\u3001Swift\u548cObjective-C\u8c03\u7528Kotlin\u7a0b\u5e8f\u65f6\u4f7f\u7528\u3002<\/section>\n","protected":false},"excerpt":{"rendered":"\u6211\u4ee5\u4e3a\u80fd\u50cf\u4f7f\u7528Java\u4e00\u6837\u81ea\u5982\u5730\u4f7f\u7528Kotlin\uff0c\u4f46\u5728\u610f\u60f3\u4e0d\u5230\u7684\u5730\u65b9\u5361\u4f4f\u4e86\uff0c\u6240\u4ee5\u5206\u4eab\u51fa\u6765\u3002 \u73af\u5883 Spring […]<\/p>\n","protected":false},"author":11,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-40318","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\n
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