first commit

play-common/src/main/java/com/starry/common/utils/ServletUtils.java

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+package com.starry.common.utils;
+
+
+import cn.hutool.core.convert.Convert;
+import org.springframework.web.context.request.RequestAttributes;
+import org.springframework.web.context.request.RequestContextHolder;
+import org.springframework.web.context.request.ServletRequestAttributes;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.servlet.http.HttpServletResponse;
+import javax.servlet.http.HttpSession;
+import java.io.IOException;
+import java.io.UnsupportedEncodingException;
+import java.net.URLDecoder;
+import java.net.URLEncoder;
+
+/**
+ * 客户端工具类
+ *
+ * @author ruoyi
+ */
+public class ServletUtils {
+    /**
+     * 获取String参数
+     */
+    public static String getParameter(String name) {
+        return getRequest().getParameter(name);
+    }
+
+    /**
+     * 获取String参数
+     */
+    public static String getParameter(String name, String defaultValue) {
+        return Convert.toStr(getRequest().getParameter(name), defaultValue);
+    }
+
+    /**
+     * 获取Integer参数
+     */
+    public static Integer getParameterToInt(String name) {
+        return Convert.toInt(getRequest().getParameter(name));
+    }
+
+    /**
+     * 获取Integer参数
+     */
+    public static Integer getParameterToInt(String name, Integer defaultValue) {
+        return Convert.toInt(getRequest().getParameter(name), defaultValue);
+    }
+
+    /**
+     * 获取Boolean参数
+     */
+    public static Boolean getParameterToBool(String name) {
+        return Convert.toBool(getRequest().getParameter(name));
+    }
+
+    /**
+     * 获取Boolean参数
+     */
+    public static Boolean getParameterToBool(String name, Boolean defaultValue) {
+        return Convert.toBool(getRequest().getParameter(name), defaultValue);
+    }
+
+    /**
+     * 获取request
+     */
+    public static HttpServletRequest getRequest() {
+        return getRequestAttributes().getRequest();
+    }
+
+    /**
+     * 获取response
+     */
+    public static HttpServletResponse getResponse() {
+        return getRequestAttributes().getResponse();
+    }
+
+    /**
+     * 获取session
+     */
+    public static HttpSession getSession() {
+        return getRequest().getSession();
+    }
+
+    public static ServletRequestAttributes getRequestAttributes() {
+        RequestAttributes attributes = RequestContextHolder.getRequestAttributes();
+        return (ServletRequestAttributes) attributes;
+    }
+
+    /**
+     * 将字符串渲染到客户端
+     *
+     * @param response 渲染对象
+     * @param string   待渲染的字符串
+     */
+    public static void renderString(HttpServletResponse response, String string) {
+        try {
+            response.setStatus(200);
+            response.setContentType("application/json");
+            response.setCharacterEncoding("utf-8");
+            response.getWriter().print(string);
+        } catch (IOException e) {
+            
+        }
+    }
+
+    /**
+     * 是否是Ajax异步请求
+     *
+     * @param request
+     */
+    /*public static boolean isAjaxRequest(HttpServletRequest request)
+    {
+        String accept = request.getHeader("accept");
+        if (accept != null && accept.contains("application/json"))
+        {
+            return true;
+        }
+
+        String xRequestedWith = request.getHeader("X-Requested-With");
+        if (xRequestedWith != null && xRequestedWith.contains("XMLHttpRequest"))
+        {
+            return true;
+        }
+
+        String uri = request.getRequestURI();
+        if (StringUtils.inStringIgnoreCase(uri, ".json", ".xml"))
+        {
+            return true;
+        }
+
+        String ajax = request.getParameter("__ajax");
+        return StringUtils.inStringIgnoreCase(ajax, "json", "xml");
+    }*/
+
+    /**
+     * 内容编码
+     *
+     * @param str 内容
+     * @return 编码后的内容
+     */
+    public static String urlEncode(String str) {
+        try {
+            return URLEncoder.encode(str, "UTF-8");
+        } catch (UnsupportedEncodingException e) {
+            return StringUtils.EMPTY;
+        }
+    }
+
+    /**
+     * 内容解码
+     *
+     * @param str 内容
+     * @return 解码后的内容
+     */
+    public static String urlDecode(String str) {
+        try {
+            return URLDecoder.decode(str, "UTF-8");
+        } catch (UnsupportedEncodingException e) {
+            return StringUtils.EMPTY;
+        }
+    }
+}