For input string: ""请大神进来看一下，试了些方法都不对，新手求解

[心中自然无码]

报错信息：

信息: exception while executing command org.jbpm.pvm.internal.cmd.SetTaskVariablesCmd@14b2263
java.lang.NumberFormatException: For input string: ""
	at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
	at java.lang.Long.parseLong(Long.java:424)
	at java.lang.Long.parseLong(Long.java:461)
	at org.jbpm.pvm.internal.cmd.SetTaskVariablesCmd.execute(SetTaskVariablesCmd.java:48)
	at org.jbpm.pvm.internal.cmd.SetTaskVariablesCmd.execute(SetTaskVariablesCmd.java:33)
	at org.jbpm.pvm.internal.svc.DefaultCommandService.execute(DefaultCommandService.java:42)
	at org.jbpm.pvm.internal.tx.SpringCommandCallback.doInTransaction(SpringCommandCallback.java:45)
	at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:130)
	at org.jbpm.pvm.internal.tx.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:49)
	at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.executeInNewEnvironment(EnvironmentInterceptor.java:53)
	at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.execute(EnvironmentInterceptor.java:40)
	at org.jbpm.pvm.internal.svc.RetryInterceptor.execute(RetryInterceptor.java:56)
	at org.jbpm.pvm.internal.svc.TaskServiceImpl.setVariables(TaskServiceImpl.java:200)
	at com.jbpm.managerimpl.JbpmManagerImpl.complate(JbpmManagerImpl.java:64)
	at com.jbpm.action.JbpmAction.submit(JbpmAction.java:123)
	at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
	at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
	at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
	at java.lang.reflect.Method.invoke(Method.java:597)

根据提示报错的两个地方如下：

public void complate(String taskId, Map<String, Object> map) {
		taskService.setVariables(taskId, map);
		taskService.completeTask(taskId);
	}

public String submit() {

		String day = processDto.getDay();
		map = new HashMap<String, Object>();

		if ("" != day || null != day) {
			map.put("day", Integer.parseInt(day));

		} else {
			map.put("day", Integer.parseInt("0"));
		}
		map.put("day", processDto.getDay());

		map.put("owner", processDto.getOwner());
		map.put("reason", processDto.getReason());
		map.put("name", processDto.getOwner());
		jbpmManager.complate(processDto.getTaskId(), map);

		return SUCCESS;
	}

[花谢尊前不敢香]

map.put("day", processDto.getDay()); 这一句就是多余的，你又绕回去了。

[CSDW]

提交的时候有为空的数据！

[心中自然无码]

回复fangmingshijie map.put("day", processDto.getDay()); 这句拿掉了还是报一样的错。 信息: exception while executing command org.jbpm.pvm.internal.cmd.SetTaskVariablesCmd@1584be7 java.lang.NumberFormatException: For input string: "" at java.lang.NumberFormatException.forInputString(NumberFormatException.java:48) at java.lang.Long.parseLong(Long.java:424) at java.lang.Long.parseLong(Long.java:461) at org.jbpm.pvm.internal.cmd.SetTaskVariablesCmd.execute(SetTaskVariablesCmd.java:48) at org.jbpm.pvm.internal.cmd.SetTaskVariablesCmd.execute(SetTaskVariablesCmd.java:33) at org.jbpm.pvm.internal.svc.DefaultCommandService.execute(DefaultCommandService.java:42) at org.jbpm.pvm.internal.tx.SpringCommandCallback.doInTransaction(SpringCommandCallback.java:45) at org.springframework.transaction.support.TransactionTemplate.execute(TransactionTemplate.java:130) at org.jbpm.pvm.internal.tx.SpringTransactionInterceptor.execute(SpringTransactionInterceptor.java:49) at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.executeInNewEnvironment(EnvironmentInterceptor.java:53) at org.jbpm.pvm.internal.svc.EnvironmentInterceptor.execute(EnvironmentInterceptor.java:40) at org.jbpm.pvm.internal.svc.RetryInterceptor.execute(RetryInterceptor.java:56) at org.jbpm.pvm.internal.svc.TaskServiceImpl.setVariables(TaskServiceImpl.java:200) at com.jbpm.managerimpl.JbpmManagerImpl.complate(JbpmManagerImpl.java:64) at com.jbpm.action.JbpmAction.submit(JbpmAction.java:122) at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)

[心中自然无码]

报错的是这两行 taskService.setVariables(taskId, map); jbpmManager.complate(processDto.getTaskId(), map);

[花谢尊前不敢香]

自己看下有没有parseInt或者parseLong的语句，都判断下。

[划水打酱油的围观党]

既然day是字符串，那应该用equals去判断它是否为空吧？ !day.trim().equals("")

[心中自然无码]

没有了，整个项目就day这里写了

[小猴168]

if ("" != day || null != day)这句逻辑有问题吧，应该是这样吧 if (day!=null && !day.equals(""))

[心中自然无码]

!day.trim().equals("") 这个也不行，还是一样的报错

[心中自然无码]

if (day!=null && !day.equals("")) 这个试了下，也不行。。。不知道什么稀奇古怪的错误

[螃蟹哥哥]

if ("" != day || null != day) { map.put("day", Integer.parseInt(day)); } else { map.put("day", Integer.parseInt("0")); } map.put("day", processDto.getDay()); 红色部分和黄色部分重复，而且建议判断字符串为空或"",使用StringUtil.isEmpty（String）或者StringUtil.isBlank(String)

[螃蟹哥哥]

还有在java中对象比较使用equals,但还是建议使用StringUtil