The problem exists in the "WeixinSystemProjectController.java",You can see that there is no filtering in the code: <img width="590" alt="Injection1" src="https://user-images.githubusercontent.com/44389101/71502148-52aee880-28a9-11ea-8cb6-8f1c677743ce.png"> The code use "${" to splice the parameters directly in the "WeixinSystemProject.xml". <img width="575" alt="Injection2" src="https://user-images.githubusercontent.com/44389101/71502244-162fbc80-28aa-11ea-9582-2b319a931b7b.png"> And this leads to a SQL injection. <img width="952" alt="Injection" src="https://user-images.githubusercontent.com/44389101/71502295-60b13900-28aa-11ea-8e5f-a1c7dbcb2d53.png">