1 List<Instrument> insts = instService.search(search); 2 3 if (insts.size() == 1) { 4 Instrument inst = insts.get(0); 5 6 if (inst != null) { 7 8 inst.setBarCode("imported"); 9 10 instService.save(inst) 11 12 } 13 }
第10行加不加都会保存上。所有以下的方式应该避免
1 List<Instrument> insts = instService.search(search); 2 3 if (insts.size() == 1) { 4 Instrument inst = insts.get(0); 5 6 if (inst != null) { 7 8 inst.setBarCode("imported"); 9 10 if(cond) { 11 instService.save(inst) 12 } 13 14 } 15 }
应该改为这样
1 List<Instrument> insts = instService.search(search); 2 3 if (insts.size() == 1) { 4 Instrument inst = insts.get(0); 5 6 7 if (inst != null) { 8 if(cond) { 9 inst.setBarCode("imported"); 10 11 instService.save(inst) 12 } 13 } 14 }