Java. Lang. illegalstateexception: cannot convert value of Type

Java. Lang. illegalstateexception: cannot convert value of type ...... To ......

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This problem is really confusing.

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After the problem was solved, I still don't know why. Let's talk about my problems and solutions.

First, I have three classes: accountservice, drawaccountservice, and curraccountservice. These three classes all inherit from a crudservice and have similar basic functions. However, they target different Dao classes, and different Dao classes target different entities and tables.

I called them in three related actions, corresponding to accountinteraction, drawaccountinteraction, and curraccountinteraction.

In accountinteraction, I autowared the accountservice. The definition is as follows:

private AccountService accountService;@Autowiredpublic void setAccountService(AccountService accountService) {this.accountService = accountService;}

Then call this accountservice to execute some related functions. Well, these are all correct. The problem is as follows.

Then, in drawaccountinteraction and curraccountinteraction, I also autowared their corresponding drawaccountservice and curraccountservice. The classes are different, but the variable names are the same, in these two actions, my reference statements are as follows:

private DrawAccountService accountService;@Autowiredpublic void setAccountService(DrawAccountService accountService) {this.accountService = accountService;}

private CurrAccountService accountService;@Autowiredpublic void setAccountService(CurrAccountService accountService) {this.accountService = accountService;}

Note: The Defined variable types are different, but the variable names are the same.

When calling the two service-related functions in drawaccountinteraction and curraccountinteraction, an error message is displayed, such as Java. Lang. illegalstateexception: cannot convert value of Type accountservice to drawaccountservcie. I am a bit puzzled, because I have not switched?

Later, the dead horse was a dead horse doctor. Since all the prompted errors mentioned accountservice, I changed this variable to another name. So in drawaccountinteraction and curraccountinteraction, I changed the two referenced variables to the following names:

private DrawAccountService drawAccountService;@Autowiredpublic void setDrawAccountService(DrawAccountService drawAccountService) {this.drawAccountService = drawAccountService;}

private CurrentAccountService currAccountService;@Autowiredpublic void setCurrAccountService(CurrentAccountService currAccountService) {this.currAccountService = currAccountService;}

Yes, the variable name is modified, and then everything is normal. To be honest, I cannot understand it.

For now.