在日常开发中，少不了与客户端进行通信，然而一些用户数据是怎么保存比较好的呢

1.保存在服务器端 传给客户端sessionid ,客户端每次之后每次请求都需要传入该sessionid,服务器验证

1. //调用
2. httpPost.setHeader("Cookie", "JSESSIONID=2F616197147E641684F30570028E4535");
3. //处理
4. public ActionForward clientmanage(ActionMapping mapping, ActionForm form,
5. HttpServletRequest request, HttpServletResponse response)throws Exception {
6. response.setCharacterEncoding("utf-8");
8. //保存xml传过来的参数
9. Map<String,String> inputMap = new HashMap<String, String>();
10. Map<String,Object> xmlMap=new HashMap<String, Object>();
11. //标识
12. String tflag = "";
13. //返回xml
14. String xml = "";
15. // StringBuffer sb = new StringBuffer();
19. BufferedReader br = null;
20. String xmlstr = request.getParameter("xml");
21. //解析xml
22. try{
23. SAXReader reader = new SAXReader();
25. // BufferedReader reReader = request.getReader();
26. //
27. // String line=reReader.readLine();
28. // while(line!=null){
29. // sb.append(line);
30. // line=reReader.readLine();
31. // }
33. // reReader.reset();
34. //HTTP请求
35. if(!StringUtils.isEmpty(xmlstr)){
36. ByteArrayInputStream bos = new ByteArrayInputStream(xmlstr.getBytes());
37. InputStreamReader ir = new InputStreamReader(bos);
38. br = new BufferedReader(ir);
39. }else{
40. br = request.getReader();
41. }
43. Document document = reader.read(br); //读取XML文件
45. Element root = document.getRootElement(); // 得到根节点
46. for(Element e : (List<Element>)root.elements()){
47. inputMap.put(e.getName(), e.getTextTrim());
48. xmlMap.putAll(XmlParserUtil.parseXml(e,true));
49. }
51. System.out.println("get------"+inputMap);
53. //客户手机类型
54. String clientType = request.getParameter("client");
55. inputMap.put("client",StringUtils.isEmpty(clientType) ? "" : clientType);
57. //保存sessionid
58. inputMap.put("sessionid", request.getSession().getId());
62. //获取当前登录用户信息
63. Users user = (Users) RequestUtil.getSessionInfo(request, "user", null);
64. if(user!=null){
65. inputMap.put("userid", user.getId().toString());
66. xmlMap.put("userid", user.getId().toString());
67. xmlMap.put("usercode", user.getUsercode());
68. inputMap.put("usercode", user.getUsercode());
69. }else{
70. xml="<?xml version=\"1.0\" encoding=\"UTF-8\"?><XMLInfo><message><status>"+
71. Constants.CLIENT_MANAGE_INFO_STATUS.TIMEOUT.value()
72. +"</status><errorInfo>请您先登陆系统！</errorInfo></message></XMLInfo>";
73. }
74. tflag = inputMap.get("tflag");
76. //根据标识调用相关方法
77. if("login".equals(tflag)){
    //用户登录
78. xml = ClientManage.login(request,oaClientService,drpRandomCheckService,oaRandomChcekService,inputMap);
79. }else if("logincrm".equals(tflag)){
    //内部使用接口,不验证IMEI码
80. xml = ClientManage.logincrm(request,oaClientService, inputMap);
81. }else if(!"".equals(xml)){
83. }else if("search".equals(tflag) ||"sort".equals(tflag)){
    //信息搜索 or 分类信息列表
84. xml = ClientManage.search(request,oaClientService, inputMap);
85. }else if("home".equals(tflag)){
    //主页部门列表
86. xml = ClientManage.home(oaClientService, inputMap);
87. }else if("cpwd".equals(tflag)){
    //密码修改
88. xml = ClientManage.cpwd(request,oaClientService,inputMap);
89. }else if("rimei".equals(tflag)){
    //IMEI申请
90. xml = ClientManage.rimei(oaClientService,inputMap);
91. }else if("mview".equals(tflag)){
    //信息查看
92. if(!StringUtils.isEmpty(xmlstr)){
93. xml = ClientViewmsgUtil.viewMsgCDATA(request,oaClientService,oaProveManageService, inputMap);
94. } else{
95. xml = ClientViewmsgUtil.viewMsg(request,oaClientService,oaProveManageService, inputMap);
96. }
97. }else if("enum".equals(tflag)){
    //枚举数据
98. xml = ClientGetEnumListUtil.getMessageByEnum(oaClientService, inputMap);
99. }else if("ctdeptpeople".equals(tflag)){
    //部门和人员信息列表获取接口
100. xml = ClientManage.ctdeptpeople(oaClientService,inputMap);
101. }else if("ctpeople".equals(tflag)){
     //人员信息获取接口
102. xml = ClientManage.ctpeople(oaClientService,inputMap);
103. }else if("ctpsearch".equals(tflag)){
     //人员信息获取接口
104. xml = ClientManage.ctpsearch(oaClientService,inputMap);
105. }else if("cturlist".equals(tflag)){
     //意见反馈信息列表获取接口
106. xml = ClientManage.cturlist(oaClientService,inputMap);
107. }else if("cturnew".equals(tflag)){
     //意见反馈新增接口
108. xml = ClientManage.cturnew(oaClientService,inputMap);
109. }else if("cturrepay".equals(tflag)){
     //意见反馈新增接口
110. xml = ClientManage.cturrepay(oaClientService,inputMap);
111. }else if("cturrinfo".equals(tflag)){
     //意见反馈回复信息列表接口
112. xml = ClientManage.cturrinfo(oaClientService,inputMap);
113. }else if("crlist".equals(tflag)){
     //信息参考信息列表获取接口
114. xml = ClientManage.crlist(oaClientService,inputMap);
115. }else if("crsinfo".equals(tflag)){
     //信息参考详细信息列表接口
116. xml = ClientManage.crsinfo(oaClientService,inputMap);
117. }else if("crvinfo".equals(tflag)){
     //信息参考内容查看接口
118. xml = ClientManage.crvinfo(oaClientService,inputMap);
119. }else if("qdept".equals(tflag)){
     //巡店部门信息列表获取接口-qdept
120. xml = ClientManage.qdept(oaClientShopVisitService, inputMap);
121. }else if("qdsearch".equals(tflag)){
     //巡店部门信息搜索接口-qdsearch
122. xml = ClientManage.qdsearch(oaClientShopVisitService, inputMap);
123. }else if("qdeptnew".equals(tflag)){
     //巡店信息提交接口-qdeptnew
124. xml =ClientManage.qdeptnew(oaClientShopVisitService, inputMap);
125. }else if("qrsendorget".equals(tflag)){
     //巡店问题结果提交和获取接口-qrsendorget
126. xml = ClientManage.qrsendorget(oaClientShopVisitService, inputMap);
127. }else if("sdcollect".equals(tflag)){
     //销售数据销售查询汇总接口-sdcollect
128. xml = ClientManage.sdcollect(oaUserSaleReportService, inputMap);
129. }else if("sddetail".equals(tflag)){
     //销售数据销售查询明细接口-sddetail
130. xml = ClientManage.sddetail(oaUserSaleReportService, inputMap);
131. }else if("sdtop".equals(tflag)){
     //销售数据销售排行接口-sdtop
132. xml = ClientManage.sdtop(oaUserSaleReportService, inputMap);
133. }else if("strdcheck".equals(tflag)){
     //随机盘点单列表接口-strdcheck
134. xml= ClientManage.strdcheck(drpRandomCheckService, inputMap);
135. }else if("strdckitem".equals(tflag)){
     //随机盘点单列表商品明细获取接口-strdcheck
136. xml= ClientManage.strdckitem(drpRandomCheckService, inputMap);
137. }else if("mstrdckitem".equals(tflag)){
     //随机盘点单商品串码更新接口-mstrdckitem
138. xml= ClientManage.mstrdckitem(drpRandomCheckService,oaRandomChcekService,xmlMap);
139. }else if("mprove".equals(tflag)){
     //OA公文证明数据更新接口-mprove
140. xml= ClientManage.mprove(oaProveManageService,inputMap);
141. }else if("datamsgs".equals(tflag)){
     //OA数据分发列表-datamsgs
142. xml= ClientManage.datamsgs(oaGatherDataService, inputMap);
143. }else if("datamsgdetail".equals(tflag)){
     //OA数据分发详情 - datamsgdetail
144. xml= ClientManage.datamsgdetail(oaGatherDataService, inputMap);
145. }else if("mdatamsgdetail".equals(tflag)){
     //修改数据分发详情 - mdatamsgdetail
146. xml= ClientManage.mdatamsgdetail(oaGatherDataService, xmlMap);
147. }
148. }catch(Exception e){
149. e.printStackTrace();
150. if(br != null){
151. br.close();
152. br = null;
153. }
154. logger.error("手机客户程序异常："+e.getMessage());
155. // logger.error("异常XML："+sb.toString());
156. logger.error("传递参数异常，导致解析xml失败!");
157. xml="<?xml version=\"1.0\" encoding=\"UTF-8\"?><XMLInfo><message><status>1</status><errorInfo>传递参数异常，导致解析xml失败!</errorInfo></message></XMLInfo>";
159. }
160. //HTTP请求
161. logger.info("output xml -------------"+xml);
162. System.out.println("out------"+xml);
163. if(!StringUtils.isEmpty(xmlstr)){
164. response.setContentType("text/xml");
165. response.setCharacterEncoding("utf-8");
167. PrintWriter writer = response.getWriter();
168. writer.write(xml);
169. writer.close();
170. return null;
171. }
174. //暂时不处理gzip压缩
175. // GZIP压缩处理
176. ByteArrayOutputStream out = new ByteArrayOutputStream();
177. GZIPOutputStream gzip=new GZIPOutputStream(out);
178. gzip.write(xml.getBytes("UTF-8"));
179. gzip.close();
180. byte[] outbyte=out.toByteArray();
181. int length=out.toByteArray().length;
182. response.setContentLength(length);
184. OutputStream put=response.getOutputStream();
185. put.write(outbyte);
186. put.close();
188. // PrintWriter pw = response.getWriter();
189. // pw.print(xml);
190. return null;
191. }

2.存入客户端，这个可以缓存到客户端数据库 比如sqlite 登录状态的话用户可以手动清理 (android源码中有)