Spring boot接口传参，如果接口用到整型，最好用Integer类型而不是int类型，例如

public ReturnResult deleteByPrimaryKey(@RequestParam("id") Integer id)

如果接口传参用int类型，最好带有默认值，例如：

@RequestParam(value="pageNum", required=false, defaultValue="1") int pageNum,
                                                @RequestParam(value="pageSize", required=false, defaultValue="10") int pageSize

给传参的接口，最好统一封装带有状态码和状态信息，这样客户端调用接口时，方便知道异常信息。

public class ReturnResult {

    //1是成功，0是失败
	private int code;
	
	private String msg;
	
	private Object data;
	
	
	
	

	public ReturnResult() {
		super();
	}


	public ReturnResult(int code, String msg, Object data) {
		super();
		this.code = code;
		this.msg = msg;
		this.data = data;
	}
	

	public ReturnResult(int code, String msg) {
		super();
		this.code = code;
		this.msg = msg;
	}

	public int getCode() {
		return code;
	}

	public void setCode(int code) {
		this.code = code;
	}

	public String getMsg() {
		return msg;
	}

	public void setMsg(String msg) {
		this.msg = msg;
	}

	public Object getData() {
		return data;
	}

	public void setData(Object data) {
		this.data = data;
	}
	
	
	
}