从数据库查找并返回Json数组
package com.bq; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import net.sf.json.JSONArray; import org.apache.struts2.interceptor.ServletRequestAware; import org.apache.struts2.interceptor.ServletResponseAware; import org.hibernate.Query; import org.hibernate.SessionFactory; import org.hibernate.cfg.Configuration; import org.hibernate.classic.Session; import com.opensymphony.xwork2.ActionSupport; public class QueryThing extends ActionSupport implements ServletRequestAware,ServletResponseAware{ Configuration cfg = new Configuration(); SessionFactory sf = cfg.configure().buildSessionFactory(); Session s = null; List<Thing> list = null; HttpServletRequest request; HttpServletResponse response; public List<Thing> getList() { return list; } public void setList(List<Thing> list) { this.list = list; } public void show() throws Exception { try { this.response.setContentType("text/json;charset=gb2312"); this.response.setCharacterEncoding("gb2312"); s = sf.openSession(); Query query = s.createQuery("from Thing"); list = query.list(); for (int i = 0; i < list.size(); i++) { Thing t = (Thing) list.get(i); System.out.println(t.getContent()); } //如何list转为json数组 JSONArray jsonArray = JSONArray.fromObject(list); String json = jsonArray.toString(); byte[] jsonBytes = json.getBytes("gb2312"); response.setContentLength(jsonBytes.length); response.getOutputStream().write(jsonBytes); response.getOutputStream().flush(); response.getOutputStream().close(); } catch (Exception e) { e.printStackTrace(); } finally { s.close(); sf.close(); } } public void setServletRequest(HttpServletRequest request) { this.request = request; } public void setServletResponse(HttpServletResponse response) { this.response = response; } }
Android解析JsonArray和JsonObject
package com.bq.xiaoyuanqxing; import java.util.ArrayList; import org.json.JSONArray; import org.json.JSONException; import org.json.JSONObject; public class JsonUnit { private ArrayList<Thing> list; private Client client; public Client getClient() { return client; } public void setClient(Client client) { this.client = client; } public ArrayList<Thing> getList() { return list; } public void setList(ArrayList<Thing> list) { this.list = list; } public JsonUnit(){ list = new ArrayList<Thing>(); } public void parse(String string) { try { JSONArray array = new JSONArray(string); for (int i = 0; i < array.length(); i++) { JSONObject temp = (JSONObject) array.get(i); String content = temp.getString("content"); String date = temp.getString("date"); String id=String.valueOf(temp.getInt("id")); String publish_id=String.valueOf(temp.getInt("publish_id")); Thing t=new Thing(id,content,date,publish_id); list.add(t); } } catch (Exception e) { e.printStackTrace(); } } public void jiexi(String string){ try { JSONObject json=new JSONObject(string); String id=String.valueOf(json.getInt("id")); String client_name=json.getString("client_name"); String address=json.getString("address"); String phone=json.getString("phone"); client=new Client(id,client_name,address,phone); } catch (JSONException e) { e.printStackTrace(); } } }
通讯中用get参数传递中文，客户端
package com.bq.xiaoyuanqxing; import java.io.BufferedReader; import java.io.IOException; import java.io.InputStream; import java.io.InputStreamReader; import java.io.UnsupportedEncodingException; import java.net.URLEncoder; import java.text.SimpleDateFormat; import java.util.Date; import java.util.TimeZone; import org.apache.http.HttpEntity; import org.apache.http.HttpResponse; import org.apache.http.HttpStatus; import org.apache.http.client.ClientProtocolException; import org.apache.http.client.HttpClient; import org.apache.http.client.methods.HttpGet; import org.apache.http.impl.client.DefaultHttpClient; import android.app.Activity; import android.os.Bundle; import android.view.View; import android.view.View.OnClickListener; import android.widget.Button; import android.widget.EditText; import android.widget.Toast; public class Add extends Activity { private String urlAddress="http://10.22.48.229:8080/Qserver/add.action"; private EditText news; private EditText num; private String content; private String number; private Button save_btn; private String date; private String p_id; @Override protected void onCreate(Bundle savedInstanceState) { // TODO Auto-generated method stub super.onCreate(savedInstanceState); setContentView(R.layout.adduser); p_id=getIntent().getStringExtra("p_id"); news=(EditText) findViewById(R.id.news); num=(EditText) findViewById(R.id.num); save_btn=(Button) findViewById(R.id.save); TimeZone tz = TimeZone.getTimeZone("ETC/GMT-8");TimeZone.setDefault(tz); SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd/HH:mm"); date=sdf.format(new Date()); save_btn.setOnClickListener(new MyOnClickListener()); } class MyOnClickListener implements OnClickListener{ @Override public void onClick(View v) { content=news.getText().toString(); number=num.getText().toString(); String s=doGet(content,date,number,p_id); if(s!=""){ Toast.makeText(getApplicationContext(), "新鲜事已添加", Toast.LENGTH_SHORT).show(); } } } public String doGet(String content,String date,String number,String publish_id){ try { content=URLEncoder.encode(content,"utf-8"); System.out.println(content); } catch (UnsupportedEncodingException e1) { e1.printStackTrace(); } String getUrl = urlAddress + "?content="+content+"&date="+date+"&publish_id="+publish_id+"&number="+number; HttpGet httpGet = new HttpGet(getUrl); HttpClient hc = new DefaultHttpClient(); try { HttpResponse ht = hc.execute(httpGet); if(ht.getStatusLine().getStatusCode() == HttpStatus.SC_OK){ HttpEntity he = ht.getEntity(); InputStream is = he.getContent(); BufferedReader br = new BufferedReader(new InputStreamReader(is,"GB2312")); String response = ""; String readLine = null; while((readLine =br.readLine()) != null){ response = response + readLine; } is.close(); br.close(); System.out.println("========="+response); return response; }else{ System.out.println(ht.getStatusLine().getStatusCode()); System.out.println("出现了错误"); return "error"; } } catch (ClientProtocolException e) { e.printStackTrace(); return "exception"; } catch (IOException e) { e.printStackTrace(); return "exception"; } } }
服务器端相应程序
package com.bq; import java.io.UnsupportedEncodingException; import java.net.URLEncoder; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import net.sf.json.JSONArray; import org.apache.struts2.interceptor.ServletRequestAware; import org.apache.struts2.interceptor.ServletResponseAware; import org.hibernate.SessionFactory; import org.hibernate.Transaction; import org.hibernate.cfg.Configuration; import org.hibernate.classic.Session; import com.opensymphony.xwork2.ActionSupport; public class Add extends ActionSupport implements ServletRequestAware,ServletResponseAware{ Configuration cfg = new Configuration(); SessionFactory sf = cfg.configure().buildSessionFactory(); Session s = null; private int id; private String content; private String date; private int publish_id; private int number; public int getId() { return id; } public void setId(int id) { this.id = id; } public String getContent() { return content; } public void setContent(String content) { this.content = content; } public String getDate() { return date; } public void setDate(String date) { this.date = date; } public int getPublish_id() { return publish_id; } public void setPublish_id(int publish_id) { this.publish_id = publish_id; } public int getNumber() { return number; } public void setNumber(int number) { this.number = number; } HttpServletRequest request; HttpServletResponse response; public void setServletRequest(HttpServletRequest request) { this.request = request; } public void setServletResponse(HttpServletResponse response) { this.response = response; } public void add(){ try { content = new String(content.getBytes("ISO-8859-1"), "utf-8"); } catch (UnsupportedEncodingException e1) { e1.printStackTrace(); } Thing t=new Thing(getContent(),getDate(),getPublish_id(),getNumber()); try { this.response.setContentType("text/json;charset=gb2312"); this.response.setCharacterEncoding("gb2312"); s = sf.openSession(); Transaction tran=s.beginTransaction(); s.save(t); tran.commit(); String json=t.toString(); byte[] jsonBytes = json.getBytes("gb2312"); response.setContentLength(jsonBytes.length); response.getOutputStream().write(jsonBytes); response.getOutputStream().flush(); response.getOutputStream().close(); System.out.println(t.toString()); } catch (Exception e) { e.printStackTrace(); } finally { s.close(); sf.close(); } } }
给ListView每个Item设置为一个对象
maplist= new ArrayList<HashMap<String, String>>(); jsonUnit.parse(getContent()); ArrayList<Thing> list=jsonUnit.getList(); for(int i=0;i<list.size();i++){ HashMap<String,String> map=new HashMap<String, String>(); Thing thing=list.get(i); map.put("id",thing.getId()); map.put("content",thing.getContent()); map.put("date",thing.getDate()); map.put("publish_id",thing.getPublish_id()); System.out.println("Activity中显示"+thing.getContent()); maplist.add(map); }
菜单的创建与点击
@Override public boolean onCreateOptionsMenu(Menu menu) { menu.add(0, 1, 1, "发布"); return true; } @Override public boolean onOptionsItemSelected(MenuItem item) { if (item.getItemId() ==1) { Intent intent=new Intent(Show.this,Add.class); intent.putExtra("p_id", p_id); startActivity(intent); } return true; }
通过id参数查找数据库
package com.bq; import java.util.List; import javax.servlet.http.HttpServletRequest; import javax.servlet.http.HttpServletResponse; import net.sf.json.JSONArray; import org.apache.struts2.interceptor.ServletRequestAware; import org.apache.struts2.interceptor.ServletResponseAware; import org.hibernate.Query; import org.hibernate.SessionFactory; import org.hibernate.cfg.Configuration; import org.hibernate.classic.Session; import com.opensymphony.xwork2.ActionSupport; public class QueryByID extends ActionSupport implements ServletRequestAware,ServletResponseAware{ Configuration cfg = new Configuration(); SessionFactory sf = cfg.configure().buildSessionFactory(); Session s = null; List<Thing> list = null; HttpServletRequest request; HttpServletResponse response; private int id; public int getId() { return id; } public void setId(int id) { this.id = id; } public List<Thing> getList() { return list; } public void setList(List<Thing> list) { this.list = list; } public void show() throws Exception { try { this.response.setContentType("text/json;charset=gb2312"); this.response.setCharacterEncoding("gb2312"); s = sf.openSession(); Query query = s.createQuery("from Thing where publish_id="+id); list = query.list(); for (int i = 0; i < list.size(); i++) { Thing t = (Thing) list.get(i); System.out.println(t.getContent()); } //如何list转为json数组 JSONArray jsonArray = JSONArray.fromObject(list); String json = jsonArray.toString(); byte[] jsonBytes = json.getBytes("gb2312"); response.setContentLength(jsonBytes.length); response.getOutputStream().write(jsonBytes); response.getOutputStream().flush(); response.getOutputStream().close(); } catch (Exception e) { e.printStackTrace(); } finally { s.close(); sf.close(); } } public void setServletRequest(HttpServletRequest request) { this.request = request; } public void setServletResponse(HttpServletResponse response) { this.response = response; } }
利用JqueryMobile来创建注册页面
<!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <!DOCTYPE html PUBLIC "" ""> <HTML><HEAD> <META content="IE=10.000" http-equiv="X-UA-Compatible"> <META charset="GB2312"> <META name="viewport" content="width=device-width, initial-scale=1"> <TITLE>注册</TITLE> <LINK href="lib/jquery.mobile-1.2.0.min.css" rel="stylesheet"> <LINK href="lib/mobile.css" rel="stylesheet"> <SCRIPT src="lib/jquery-1.6.4.min.js"></SCRIPT> <SCRIPT src="lib/jquery.mobile-1.2.0.min.js"></SCRIPT> <META name="GENERATOR" content="MSHTML 10.00.9200.16576"></HEAD> <BODY> <DIV data-role="page"> <DIV data-role="header" data-position="inline"> <H1>注册</H1></DIV> <DIV data-role="content"> <FORM action="http://10.22.48.229:8080/Qserver/register.action" method="POST"> <INPUT name="from_mobile" type="hidden" value="1"> <INPUT name="goto_page" type="hidden" value="/regok"> <INPUT name="error_page" type="hidden" value="/reg"> <LABEL for="login_nameLabel" >用户名:</LABEL><BR> <INPUT name="client_name" class="ui-input-text ui-body-null ui-corner-all ui-shadow-inset ui-body-c" id="login_name" type="text"><BR> <LABEL for="login_tel">手机:</LABEL><BR> <INPUT name="phone" class="ui-input-text ui-body-null ui-corner-all ui-shadow-inset ui-body-c" id="tel" type="tel"><BR> <LABEL for="login_pwordLabe" >密码:</LABEL><BR> <INPUT name="password" class="ui-input-text ui-body-null ui-corner-all ui-shadow-inset ui-body-c" id="login_pword" type="password"><BR> <LABEL>地址:</LABEL><BR> <INPUT name="address" class="ui-input-text ui-body-null ui-corner-all ui-shadow-inset ui-body-c" id="login_address" type="text"><BR> <BUTTON type="submit" data-theme="b" data-inline="true">注册新用户</BUTTON> <HR> </FORM> </DIV> <DIV class="footer-docs" data-role="footer" data-theme="c"> <P> 2012~2013 白强</P> </DIV> </BODY> </HTML>
还有一些其他问题，但是主要的就是这样的了