更新后端，采用Springboot+mybatis

src/main/java/com/jsh/erp/utils/ParamUtils.java

@@ -0,0 +1,40 @@
+package com.jsh.erp.utils;
+
+import javax.servlet.http.HttpServletRequest;
+import java.util.Collections;
+import java.util.Enumeration;
+import java.util.HashMap;
+
+/**
+ * @author jishenghua qq752718920  2018-10-7 15:26:27
+ */
+public class ParamUtils {
+    public static String getPageOffset(Integer currentPage, Integer pageSize) {
+        if (currentPage != null && pageSize != null) {
+            int offset = (currentPage - 1) * pageSize;
+            if (offset < 0) {
+                return 0 + "";
+            } else {
+                return offset + "";
+            }
+        }
+        return null;
+    }
+
+    public static HashMap<String, String> requestToMap(HttpServletRequest request) {
+
+        HashMap<String, String> parameterMap = new HashMap<String, String>();
+        Enumeration<String> names = request.getParameterNames();
+        if (names != null) {
+            for (String name : Collections.list(names)) {
+                parameterMap.put(name, request.getParameter(name));
+                /*HttpMethod method = HttpMethod.valueOf(request.getMethod());
+                if (method == GET || method == DELETE)
+                    parameterMap.put(name, transcoding(request.getParameter(name)));
+                else
+                    parameterMap.put(name, request.getParameter(name));*/
+            }
+        }
+        return parameterMap;
+    }
+}