\u5728\u65e5\u5e38\u5f00\u53d1\u4e2d\u7ecf\u5e38\u4f1a\u6d89\u53ca\u5927\u91cf\u6570\u636e\u4fdd\u5b58\u7684\u60c5\u51b5\uff0c\u4e4b\u524d\u5c31\u662f\u4f7f\u7528saveBatch\u7684\u65b9\u5f0f\uff0c\u76f4\u63a5\u653e\u4e00\u4e2alist\u8fdb\u53bb\uff0c\u770b\u5230\u4e00\u7bc7\u5173\u4e8eMyBatisPlus\u6279\u91cf\u4fdd\u5b58saveBatch\u7684\u6587\u7ae0\uff0c\u91cc\u9762\u5bf9saveBatch\u8fdb\u884c\u4e86\u6570\u636e\u91cf\u7684\u4fdd\u5b58\u6d4b\u8bd5\uff0c\u8fd8\u6709\u89e3\u6790rewriteBatchedStatements=true \u7684\u4f5c\u7528\uff0c\u4f46\u6d4b\u8bd5\u7684\u6279\u6b21\u548c\u5bf9\u6bd4\u6bd4\u8f83\u5c11\uff0c\u6240\u4ee5\u53c8\u5bf9\u5404\u79cd\u65b9\u5f0f\u7684\u4fdd\u5b58\u6027\u80fd\u8fdb\u884c\u5206\u6790\uff0c\u901a\u8fc7\u9010\u4e2a\u63d2\u5165\uff0c\u591a\u7ebf\u7a0b\u63d2\u5165\uff0c\u6279\u91cf\u63d2\u5165\uff0c\u591a\u7ebf\u7a0b\u6279\u91cf\u63d2\u5165\u7684\u65b9\u5f0f\uff0c\u6bd4\u8f83\u5177\u4f53\u7684\u5dee\u5f02\u60c5\u51b5\u3002<\/p>\n
\u6d4b\u8bd5\u524d\u7684\u6570\u636e\u51c6\u5907 \u603b\u7ed3rewriteBatchedStatements=true\u7684\u4f5c\u7528 \u5728\u65e5\u5e38\u5f00\u53d1\u4e2d\u7ecf\u5e38\u4f1a\u6d89\u53ca\u5927\u91cf\u6570\u636e\u4fdd\u5b58\u7684\u60c5\u51b5\uff0c\u4e4b\u524d\u5c31\u662f\u4f7f\u7528saveBatch\u7684\u65b9\u5f0f\uff0c\u76f4\u63a5\u653e\u4e00\u4e2alist\u8fdb\u53bb\uff0c\u770b\u5230\u4e00\u2026 Read More »<\/a><\/span><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"class_list":["post-1531","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"_links":{"self":[{"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/posts\/1531","targetHints":{"allow":["GET"]}}],"collection":[{"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/comments?post=1531"}],"version-history":[{"count":1,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/posts\/1531\/revisions"}],"predecessor-version":[{"id":1532,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/posts\/1531\/revisions\/1532"}],"wp:attachment":[{"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/media?parent=1531"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/categories?post=1531"},{"taxonomy":"post_tag","embeddable":true,"href":"http:\/\/rain1024.com\/index.php\/wp-json\/wp\/v2\/tags?post=1531"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
\n\u4e3a\u4e86\u4fdd\u8bc1\u8db3\u591f\u7684\u6570\u636e\u91cf\uff0c\u6bcf\u6b21\u7b5b\u9009\u51fa5000\u6761\u6570\u636e\u8fdb\u884c\u63d2\u5165\uff0c\u6bcf\u6761\u6570\u636e\u5177\u670911\u4e2a\u5b57\u6bb5\uff0c\u5927\u7ea6100\u4e2a\u5b57\u8282\uff0c\u603b\u4f53\u6570\u636e\u5927\u5c0f\u7ea6500KB\u3002
\n\u9010\u4e2a\u4fdd\u5b58\u65b9\u6848\uff1a\u904d\u53865000\u6761\u6570\u636e\uff0c\u9010\u4e2a\u4f7f\u7528save\u65b9\u5f0f\u8fdb\u884c\u4fdd\u5b58\u3002
\n\u591a\u7ebf\u7a0b\u9010\u4e2a\u4fdd\u5b58\u65b9\u6848\uff1a\u65b0\u5efa\u7ebf\u7a0b\u6c60\uff0c\u5176\u4e2d\u7ebf\u7a0b\u6570\u91cf\u4e3a5\u4e2a\uff0c\u904d\u53865000\u6761\u6570\u636e\u65f6\u6bcf\u6b21\u65b0\u5efa\u4e00\u4e2a\u4efb\u52a1\u6254\u5230\u7ebf\u7a0b\u6c60\u4e2d\u8fdb\u884c\u5904\u7406\uff0c\u7ebf\u7a0b\u4f7f\u7528save\u7684\u65b9\u5f0f\u8fdb\u884c\u4fdd\u5b58\u3002
\nsaveBatch\u65b9\u6848\uff1a\u4e0d\u8bbe\u7f6esaveBatch\u7684batchSize\u53c2\u6570\uff0c\u76f4\u63a5\u5c065000\u6761\u6570\u636e\u7684list\u653e\u5165\u65b9\u6cd5\u4e2d\u8fdb\u884c\u6279\u91cf\u4fdd\u5b58\u3002
\n\u591a\u7ebf\u7a0bsaveBatch\u65b9\u6848\uff1a\u65b0\u5efa\u7ebf\u7a0b\u6c60\uff0c\u5176\u4e2d\u7ebf\u7a0b\u6570\u91cf\u4e3a5\u4e2a\uff0c\u904d\u53865000\u6761\u6570\u636e\u65f6\u5c06\u6570\u636e\u5747\u5206\u62105\u4e2alist\uff0c\u5206\u522b\u653e\u5230\u7ebf\u7a0b\u6c60\u4e2d\u8fdb\u884c\u6267\u884c\uff0c\u7ebf\u7a0b\u4f7f\u7528saveBatch\u7684\u65b9\u5f0f\u76f4\u63a5\u5c061000\u6761\u6570\u636e\u8fdb\u884c\u6279\u91cf\u4fdd\u5b58\u3002
\n\u4ee5\u4e0a\u591a\u7ebf\u7a0b\u7684\u6267\u884c\u65b9\u5f0f\u91c7\u7528submit\u6709future\u7684\u8fd4\u56de\u65b9\u5f0f\uff0c\u4efb\u52a1\u653e\u5165\u7ebf\u7a0b\u6c60\u540e\u4fdd\u5b58future\u5bf9\u8c61\uff0c\u540e\u7eed\u624b\u52a8\u8fdb\u884cget\u8bf7\u6c42\uff0c\u4fdd\u8bc1\u8ba1\u65f6\u5185\u7684\u4efb\u52a1\u90fd\u6267\u884c\u5b8c\u6bd5\u3002\u56e0\u4e3a\u5982\u679c\u4f7f\u7528\u8fd9\u79cd\u5f02\u6b65\u65b9\u5f0f\u76f4\u63a5\u4fdd\u5b58\uff0c\u8ba1\u65f6\u5668\u53ea\u4f1a\u7edf\u8ba1\u6254\u5230\u7ebf\u7a0b\u6c60\u7684\u65f6\u95f4\uff0c\u5927\u69825ms\u5c31\u80fd\u7ed3\u675f\uff0c\u4e0d\u5177\u5907\u53c2\u8003\u7684\u610f\u4e49\u3002
\n\u6d4b\u8bd5\u524d\u7684\u4ee3\u7801\u5185\u5bb9
\n\u65b9\u68481\uff1a\u9010\u4e2a\u4fdd\u5b58\u65b9\u6848
\npublic String dbDataTest() {
\n\/\/ \u83b7\u53d6\u80fd\u6e90\u6570\u636e\u5217\u8868
\nList
\n\/\/ \u8bb0\u5f55\u5f00\u59cb\u65f6\u95f4
\nlong start = System.currentTimeMillis();
\n\/\/ \u904d\u5386\u6570\u636e\u5217\u8868\uff0c\u5c06\u6bcf\u4e2a\u80fd\u6e90\u6570\u636e\u8f6c\u6362\u4e3a\u80fd\u6e90\u6d4b\u8bd5\u6570\u636e\u5e76\u4fdd\u5b58\u5230\u6570\u636e\u5e93
\nfor (Energy energy : dataList) {
\n\/\/ \u521b\u5efa\u80fd\u6e90\u6d4b\u8bd5\u6570\u636e\u5bf9\u8c61
\nEnergyTest test = EnergyTest.builder().id(energy.getId()).buildId(energy.getBuildId()).buildName(energy.getBuildName())
\n.collectionTime(energy.getCollectionTime()).dataType(energy.getDataType()).usageData(energy.getUsageData())
\n.meterId(energy.getMeterId()).meterName(energy.getMeterName()).meterType(energy.getMeterType())
\n.reading(energy.getReading()).totalSurface(energy.getTotalSurface()).build();
\n\/\/ \u5c06\u80fd\u6e90\u6d4b\u8bd5\u6570\u636e\u4fdd\u5b58\u5230\u6570\u636e\u5e93
\nenergyTestService.save(test);
\n}
\n\/\/ \u8bb0\u5f55\u7ed3\u675f\u65f6\u95f4
\nlong end = System.currentTimeMillis();
\n\/\/ \u8fd4\u56de\u6267\u884c\u65f6\u95f4
\nreturn end - start + "ms";
\n}
\n\u65b9\u68482\uff1a\u591a\u7ebf\u7a0b\u9010\u4e2a\u4fdd\u5b58\u65b9\u6848
\npublic String dbDataTest2() throws ExecutionException, InterruptedException {
\n\/\/ \u83b7\u53d6\u80fd\u6e90\u6570\u636e\u5217\u8868
\nList
\n\/\/ \u8bb0\u5f55\u5f00\u59cb\u65f6\u95f4
\nlong start = System.currentTimeMillis();
\n\/\/\u521b\u5efa\u7ebf\u7a0b\u6c60
\nExecutorService executorService = Executors.newFixedThreadPool(5);
\n\/\/ \u521b\u5efa\u4e00\u4e2a\u7528\u4e8e\u5b58\u50a8\u5f02\u6b65\u4efb\u52a1\u6267\u884c\u7ed3\u679c\u7684\u5217\u8868
\nList<Future<?>> futures = new ArrayList<>();
\nfor (Energy energy : dataList) {
\n\/\/ \u521b\u5efa\u80fd\u6e90\u6d4b\u8bd5\u6570\u636e\u5bf9\u8c61
\nEnergyTest test = EnergyTest.builder().id(energy.getId()).buildId(energy.getBuildId()).buildName(energy.getBuildName())
\n.collectionTime(energy.getCollectionTime()).dataType(energy.getDataType()).usageData(energy.getUsageData())
\n.meterId(energy.getMeterId()).meterName(energy.getMeterName()).meterType(energy.getMeterType())
\n.reading(energy.getReading()).totalSurface(energy.getTotalSurface()).build();
\n\/\/ \u5c06\u80fd\u6e90\u6d4b\u8bd5\u6570\u636e\u4fdd\u5b58\u5230\u6570\u636e\u5e93
\nfutures.add(executorService.submit(() -> {
\nenergyTestService.save(test);
\nreturn "null";
\n}));
\n}
\n\/\/\u83b7\u53d6\u5f02\u6b65\u4efb\u52a1\u6267\u884c\u7ed3\u679c
\nfor (Future<?> future : futures) {
\nfuture.get();
\n}
\n\/\/ \u8bb0\u5f55\u7ed3\u675f\u65f6\u95f4
\nlong end = System.currentTimeMillis();
\n\/\/ \u8fd4\u56de\u6267\u884c\u65f6\u95f4
\nreturn end - start + "ms";
\n}
\n\u0000\u65b9\u68483\uff1asaveBatch\u65b9\u6848
\npublic String dbDataTest3() {
\n\/\/ \u83b7\u53d6\u80fd\u6e90\u6570\u636e\u5217\u8868
\nList
\n\/\/ \u8bb0\u5f55\u5f00\u59cb\u65f6\u95f4
\nlong start = System.currentTimeMillis();
\n\/\/ \u521b\u5efa\u4e00\u4e2a\u7528\u4e8e\u5b58\u50a8 EnergyTest \u5bf9\u8c61\u7684\u5217\u8868
\nList
\n\/\/ \u904d\u5386\u6570\u636e\u5217\u8868\uff0c\u5c06\u6bcf\u4e2a\u80fd\u6e90\u6570\u636e\u8f6c\u6362\u4e3a\u80fd\u6e90\u6d4b\u8bd5\u6570\u636e\u5e76\u6dfb\u52a0\u5230 testList \u4e2d
\nfor (Energy energy : dataList) {
\n\/\/ \u521b\u5efa\u80fd\u6e90\u6d4b\u8bd5\u6570\u636e\u5bf9\u8c61
\nEnergyTest test = EnergyTest.builder().id(energy.getId()).buildId(energy.getBuildId()).buildName(energy.getBuildName())
\n.collectionTime(energy.getCollectionTime()).dataType(energy.getDataType()).usageData(energy.getUsageData())
\n.meterId(energy.getMeterId()).meterName(energy.getMeterName()).meterType(energy.getMeterType())
\n.reading(energy.getReading()).totalSurface(energy.getTotalSurface()).build();
\n\/\/ \u5c06\u80fd\u6e90\u6d4b\u8bd5\u6570\u636e\u6dfb\u52a0\u5230 testList \u4e2d
\ntestList.add(test);
\n}
\n\/\/ \u5c06 testList \u4e2d\u7684\u6240\u6709\u80fd\u6e90\u6d4b\u8bd5\u6570\u636e\u6279\u91cf\u4fdd\u5b58\u5230\u6570\u636e\u5e93
\nenergyTestService.saveBatch(testList);
\n\/\/ \u8bb0\u5f55\u7ed3\u675f\u65f6\u95f4
\nlong end = System.currentTimeMillis();
\n\/\/ \u8fd4\u56de\u6267\u884c\u65f6\u95f4
\nreturn end - start + "ms";
\n}
\n\u0000\u65b9\u68484\uff1a\u591a\u7ebf\u7a0bsaveBatch\u65b9\u6848
\npublic String dbDataTest4() throws ExecutionException, InterruptedException {
\n\/\/ \u83b7\u53d6\u80fd\u6e90\u6570\u636e\u5217\u8868
\nList
\n\/\/ \u8bb0\u5f55\u5f00\u59cb\u65f6\u95f4
\nlong start = System.currentTimeMillis();
\n\/\/\u521b\u5efa\u7ebf\u7a0b\u6c60
\nExecutorService executorService = Executors.newFixedThreadPool(5);
\n\/\/ \u7528\u4e8e\u5b58\u50a8\u5206\u6279\u540e\u7684\u80fd\u6e90\u6d4b\u8bd5\u6570\u636e
\nMap<String, List
\n\/\/ \u6807\u8bb0\u5f53\u524d\u6279\u6b21
\nint saveFlag = 0;
\n\/\/ \u904d\u5386\u6570\u636e\u5217\u8868\uff0c\u5c06\u6bcf\u4e2a\u80fd\u6e90\u6570\u636e\u8f6c\u6362\u4e3a\u80fd\u6e90\u6d4b\u8bd5\u6570\u636e\u5e76\u6dfb\u52a0\u5230\u5bf9\u5e94\u7684\u6279\u6b21\u4e2d
\nfor (Energy energy : dataList) {
\nEnergyTest test = EnergyTest.builder().id(energy.getId()).buildId(energy.getBuildId()).buildName(energy.getBuildName())
\n.collectionTime(energy.getCollectionTime()).dataType(energy.getDataType()).usageData(energy.getUsageData())
\n.meterId(energy.getMeterId()).meterName(energy.getMeterName()).meterType(energy.getMeterType())
\n.reading(energy.getReading()).totalSurface(energy.getTotalSurface()).build();
\n\/\/ \u5982\u679c\u5f53\u524d\u6279\u6b21\u7684\u5217\u8868\u4e0d\u5b58\u5728\u6216\u5927\u5c0f\u8d85\u8fc71000\uff0c\u5219\u521b\u5efa\u65b0\u7684\u6279\u6b21
\nif (!testListMap.containsKey(String.valueOf(saveFlag)) || testListMap.get(String.valueOf(saveFlag)).size() >= 1000) {
\nsaveFlag++;
\ntestListMap.put(String.valueOf(saveFlag), new ArrayList<>());
\n}
\n\/\/ \u5c06\u80fd\u6e90\u6d4b\u8bd5\u6570\u636e\u6dfb\u52a0\u5230\u5f53\u524d\u6279\u6b21\u7684\u5217\u8868\u4e2d
\ntestListMap.get(String.valueOf(saveFlag)).add(test);
\n}
\n\/\/ \u521b\u5efa\u4e00\u4e2a\u7528\u4e8e\u5b58\u50a8\u5f02\u6b65\u4efb\u52a1\u6267\u884c\u7ed3\u679c\u7684\u5217\u8868
\nList<Future<?>> futures = new ArrayList<>();
\n\/\/ \u904d\u5386\u6279\u6b21\u5217\u8868\uff0c\u5c06\u6bcf\u4e2a\u6279\u6b21\u7684\u80fd\u6e90\u6d4b\u8bd5\u6570\u636e\u6279\u91cf\u4fdd\u5b58\u5230\u6570\u636e\u5e93
\nfor (Map.Entry<String, List
\nList
\n\/\/ \u63d0\u4ea4\u5f02\u6b65\u4efb\u52a1\uff0c\u5c06\u5f53\u524d\u6279\u6b21\u7684\u6570\u636e\u6279\u91cf\u4fdd\u5b58\u5230\u6570\u636e\u5e93
\nfutures.add(executorService.submit(() -> {
\nenergyTestService.saveBatch(testList);
\nreturn "null";
\n}));
\n}
\n\/\/ \u83b7\u53d6\u5f02\u6b65\u4efb\u52a1\u6267\u884c\u7ed3\u679c
\nfor (Future<?> future : futures) {
\nfuture.get();
\n}
\n\/\/ \u8bb0\u5f55\u7ed3\u675f\u65f6\u95f4
\nlong end = System.currentTimeMillis();
\n\/\/ \u8fd4\u56de\u6267\u884c\u65f6\u95f4
\nreturn end - start + "ms";
\n}
\n\u7b2c\u4e00\u6b21\u6d4b\u8bd5\uff08\u4e0d\u8bbe\u7f6erewriteBatchedStatements=true\uff09
\n\u6d4b\u8bd5\u6279\u6b21\/\u8017\u65f6 \u9010\u4e2a\u4fdd\u5b58\u65b9\u6848 \u591a\u7ebf\u7a0b\u9010\u4e2a\u4fdd\u5b58\u65b9\u6848 saveBatch\u65b9\u6848 \u591a\u7ebf\u7a0bsaveBatch\u65b9\u6848
\n1 1461ms 514ms 432ms 167ms
\n2 1432ms 544ms 416ms 170ms
\n3 1347ms 539ms 428ms 163ms
\n4 1288ms 486ms 413ms 184ms
\n5 1434ms 560ms 440ms 168ms
\n6 1460ms 513ms 462ms 188ms
\n7 1453ms 480ms 466ms 194ms
\n8 1435ms 477ms 459ms 170ms
\n9 1508ms 491ms 408ms 160ms
\n10 1437ms 484ms 417ms 178ms
\n\u6700\u5927\u503c 1508ms 560ms 466ms 194ms
\n\u6700\u5c0f\u503c 1288ms 477ms 408ms 160ms
\n\u5e73\u5747\u503c 1425.5ms 508.8ms 434.1ms 174.2ms
\n\u901a\u8fc7\u5341\u6b21\u6d4b\u8bd5\u6570\u636e\uff0c\u867d\u7136\u8fd8\u6709\u504f\u5dee\uff0c\u4f46\u4e5f\u5177\u4f53\u6709\u4e9b\u53c2\u8003\u7684\u4ef7\u503c\uff0c\u9996\u5148\u662f\u9010\u4e2a\u4fdd\u5b58\u7684\u65b9\u6848\u6548\u7387\u6700\u4f4e\uff0c\u591a\u7ebf\u7a0b\u7684\u65b9\u5f0f\u4f1a\u63d0\u9ad8\u5f88\u591a\uff0c\u800csaveBatch\u660e\u663e\u8981\u6bd4\u591a\u7ebf\u7a0b\u7684\u65b9\u5f0f\u66f4\u597d\uff0csaveBatch\u5e76\u6ca1\u6709\u5bf9\u591a\u6761SQL\u8fdb\u884c\u5408\u5e76\uff0c\u53ef\u80fdsaveBatch\u7684\u7ebf\u7a0b\u6570\u91cf\u591a\u4e00\u4e9b\uff0c\u8fd9\u91cc\u6211\u5c06\u591a\u7ebf\u7a0b\u9010\u4e2a\u4fdd\u5b58\u65b9\u6848\u81ea\u5b9a\u4e49\u7684\u7ebf\u7a0b\u6c60\u5185\u7ebf\u7a0b\u6570\u91cf\u8c03\u6574\u4e3a10\uff0c\u8017\u65f6\u57fa\u672c\u548csaveBatch\u7684\u76f8\u540c\uff0c\u751a\u81f3\u8fd8\u6bd4saveBatch\u8981\u5feb\u4e00\u4e9b\uff0c\u800c\u8c03\u5927\u7ebf\u7a0b\u6c60\u7684\u9010\u4e2a\u4fdd\u5b58\u65b9\u6848\u5728300ms\u5de6\u53f3\u8fbe\u5230\u74f6\u9888\uff0c\u5f88\u96be\u518d\u6839\u636e\u7ebf\u7a0b\u6570\u91cf\u5c06\u8017\u65f6\u964d\u4f4e\u3002\u8fd9\u91cc\u591a\u7ebf\u7a0bsaveBatch\u7684\u65b9\u6848\u660e\u663e\u662f\u6700\u5feb\u7684\uff0c\u5e94\u8be5\u662fsaveBatch\u8fd8\u6709\u4e00\u4e9b\u5176\u4ed6\u65b9\u5f0f\u7684\u4f18\u5316\u3002
\n\u7b2c\u4e8c\u6b21\u6d4b\u8bd5\uff08\u8bbe\u7f6erewriteBatchedStatements=true\uff09
\n\u6d4b\u8bd5\u6279\u6b21\/\u8017\u65f6 \u9010\u4e2a\u4fdd\u5b58\u65b9\u6848 \u591a\u7ebf\u7a0b\u9010\u4e2a\u4fdd\u5b58\u65b9\u6848 saveBatch\u65b9\u6848 \u591a\u7ebf\u7a0bsaveBatch\u65b9\u6848
\n1 1536ms 505ms 244ms 106ms
\n2 1591ms 495ms 277ms 89ms
\n3 1628 510ms 261ms 96ms
\n4 1618ms 487ms 281ms 100ms
\n5 1581ms 519ms 258ms 111ms
\n6 1655ms 515ms 264ms 112ms
\n7 1618ms 508ms 271ms 103ms
\n8 1507ms 519ms 282ms 98ms
\n9 1531ms 509ms 280ms 85ms
\n10 1651ms 507ms 287ms 96ms
\n\u6700\u5927\u503c 1655ms 519ms 287ms 112ms
\n\u6700\u5c0f\u503c 1507ms 487ms 244ms 85ms
\n\u5e73\u5747\u503c 1591.6ms 507.4ms 270.5ms 99.6ms
\n\u901a\u8fc7\u5bf9\u6bd4\u7b2c\u4e00\u6b21\u6d4b\u8bd5\u7684\u7ed3\u679c\u53ef\u4ee5\u770b\u51fa\u6765\uff0c\u9010\u4e2a\u4fdd\u5b58\u548c\u591a\u7ebf\u7a0b\u9010\u4e2a\u4fdd\u5b58\u7684\u539f\u7406\u90fd\u662f\u6bcf\u6b21\u6267\u884c\u4e00\u6761SQL\u8bed\u53e5\uff0c\u6240\u4ee5\u5728\u6027\u80fd\u4e0a\u6ca1\u6709\u4efb\u4f55\u4f18\u5316\u63d0\u5347\uff0c\u800csaveBatch\u5219\u63d0\u5347\u4e8640\uff5e50%\u3002<\/p>\n
\n4.1 JDBC\u6279\u5904\u7406\u673a\u5236
\nJDBC\u6279\u5904\u7406\u673a\u5236\u662f\u4e00\u79cd\u4f18\u5316\u6570\u636e\u5e93\u64cd\u4f5c\u6027\u80fd\u7684\u6280\u672f\uff0c\u5141\u8bb8\u5c06\u591a\u6761SQL\u8bed\u53e5\u4f5c\u4e3a\u4e00\u4e2a\u6279\u6b21\u53d1\u9001\u5230\u6570\u636e\u5e93\u670d\u52a1\u5668\u6267\u884c\uff0c\u4ece\u800c\u51cf\u5c11\u5ba2\u6237\u7aef\u4e0e\u6570\u636e\u5e93\u4e4b\u95f4\u7684\u4ea4\u4e92\u6b21\u6570\uff0c\u663e\u8457\u63d0\u9ad8\u6027\u80fd\u3002\u901a\u5e38\u7528\u4e8e\u6279\u91cf\u63d2\u5165\u3001\u6279\u91cf\u66f4\u65b0\u548c\u6279\u91cf\u5220\u9664\u7b49\u573a\u666f\u3002\u5177\u4f53\u7684\u6d41\u7a0b\u5982\u4e0b\uff1a
\n\/\/\u521b\u5efa PreparedStatement \u5bf9\u8c61,\u7528\u4e8e\u5b9a\u4e49\u6279\u5904\u7406\u7684 SQL \u6a21\u677f\u3002
\nPreparedStatement pstmt = conn.prepareStatement(sql);
\nfor (Data data : dataList) {
\n\/\/ \u591a\u6b21\u8c03\u7528 addBatch() \u65b9\u6cd5,\u6bcf\u6b21\u8c03\u7528\u90fd\u4f1a\u5c06\u4e00\u6761 SQL \u52a0\u5165\u6279\u5904\u7406\u961f\u5217\u3002
\npstmt.addBatch();
\n}
\n\/\/\u6267\u884c\u6279\u5904\u7406,\u8c03\u7528 executeBatch() \u65b9\u6cd5\uff0c\u6279\u91cf\u53d1\u9001 SQL \u5e76\u6267\u884c\u3002
\npstmt.executeBatch();
\n4.2 MySQL JDBC \u9a71\u52a8\u7684\u9ed8\u8ba4\u884c\u4e3a\u5bf9\u6279\u5904\u7406\u7684\u5f71\u54cd
\n\u672a\u5f00\u542f\u91cd\u5199\uff1a\u5728\u9ed8\u8ba4\u72b6\u6001\u4e0b\uff0cMySQL JDBC\u9a71\u52a8\u4f1a\u9010\u4e00\u6761\u76ee\u5730\u53d1\u9001\u6279\u5904\u7406\u4e2d\u7684SQL\u8bed\u53e5\uff0c\u672a\u5f00\u542f\u91cd\u5199\u529f\u80fd\u3002
\n\u6027\u80fd\u74f6\u9888\uff1a\u9891\u7e41\u7684\u7f51\u7edc\u4ea4\u4e92\u4ee5\u53ca\u6570\u636e\u5e93\u89e3\u6790\u64cd\u4f5c\uff0c\u4f7f\u5f97\u6279\u91cf\u64cd\u4f5c\u7684\u6027\u80fd\u63d0\u5347\u6548\u679c\u6709\u9650\uff0c\u5f62\u6210\u4e86\u6027\u80fd\u74f6\u9888\u3002
\n4.3 rewriteBatchedStatements=true
\n\u542f\u7528\u6279\u5904\u7406\u91cd\u5199\uff1a\u542f\u7528\u6279\u5904\u7406\u91cd\u5199\u529f\u80fd\u540e\uff0c\u9a71\u52a8\u80fd\u591f\u5c06\u591a\u6761\u540c\u7c7b\u578b\u7684SQL\u8bed\u53e5\u8fdb\u884c\u5408\u5e76\uff0c\u8fdb\u800c\u53d1\u9001\u7ed9\u6570\u636e\u5e93\u6267\u884c\u3002
\n\u51cf\u5c11\u7f51\u7edc\u4ea4\u4e92\uff1a\u4e00\u6b21\u53d1\u9001\u591a\u6761SQL\uff0c\u53ef\u6709\u6548\u964d\u4f4e\u7f51\u7edc\u5ef6\u8fdf\uff0c\u51cf\u5c11\u7f51\u7edc\u4ea4\u4e92\u6b21\u6570\u3002
\n\u63d0\u9ad8\u6267\u884c\u6548\u7387\uff1a\u5f53\u6240\u6709\u6570\u636e\u90fd\u901a\u8fc7\u4e00\u6761SQL\u63d2\u5165\u65f6\uff0cMySQL\u53ea\u9700\u8981\u89e3\u6790\u4e00\u6b21SQL\uff0c\u964d\u4f4e\u4e86\u89e3\u6790\u548c\u6267\u884c\u7684\u5f00\u9500\u3002
\n\u51cf\u5c11\u5185\u5b58\u6d88\u8017\uff1a\u867d\u7136\u6279\u91cf\u64cd\u4f5c\u65f6\u5c06\u6570\u636e\u5408\u5e76\u5230\u4e00\u6761SQL\u4e2d\uff0c\u7406\u8bba\u4e0a\u4f1a\u589e\u52a0\u5185\u5b58\u4f7f\u7528\uff08\u56e0\u4e3a\u9700\u8981\u6784\u5efa\u66f4\u5927\u7684SQL\u5b57\u7b26\u4e32\uff09\uff0c\u4f46\u76f8\u6bd4\u591a\u6b21\u5355\u6761\u63d2\u5165\u7684\u7f51\u7edc\u5ef6\u8fdf\u548c\u5904\u7406\u5f00\u9500\uff0c\u6574\u4f53\u7684\u8d44\u6e90\u6d88\u8017\u548c\u6267\u884c\u6548\u7387\u662f\u66f4\u4f18\u7684\u3002
\n\u672a\u5f00\u542f\u53c2\u6570\u65f6\u7684\u6279\u5904\u7406SQL\uff1a
\nINSERTINTO question (exam_id, content) VALUES (?, ?);
\nINSERT INTO question (exam_id, content) VALUES (?, ?);
\nINSERT INTO question (exam_id, content) VALUES (?, ?);
\n\u5f00\u542f\u53c2\u6570\u540e\u7684\u6279\u5904\u7406 SQL\uff1a
\nINSERT INTO question (exam_id, content) VALUES (?, ?), (?, ?), (?, ?);<\/p>\n","protected":false},"excerpt":{"rendered":"