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Android通过Webservice操作sqlserver数据库实例代码

2019年07月24日  | 移动技术网移动技术  | 我要评论

首页在androidmanifest.xml中添加访问数据库权限

<uses-sdk android:minsdkversion="7" />
<uses-permission android:name="android.permission.internet" />

在src中新建一个连接webservice的类，名字随意，这里叫做“httpconnsoap”。基本上这个类是固定的，要改的大多数就是webservice端口地址，具体代码如下：

package com.example.hospital;//名字要改成自己的包名
import java.io.ioexception;
import java.io.inputstream;
import java.io.outputstream;
import java.net.httpurlconnection;
import java.net.url;
import java.util.arraylist;
import java.util.list;
import org.xmlpull.v1.xmlpullparser; 
import android.util.xml; 
public class httpconnsoap {
public arraylist<string> getwebservre(string methodname,arraylist<string> parameters,arraylist<string>parvalues)
{
arraylist<string> values=new arraylist<string>();
string serverurl="http://10.0.2.2:8093/service1.asmx";//网友要改的大多数就是这里。
//string soapaction="http://tempuri.org/longuserid1";
string soapaction="http://tempuri.org/"+methodname;
string data="";
string soap = "<?xml version=\"1.0\" encoding=\"utf-8\"?>" 
+ "<soap:envelope xmlns:xsi=\"http://www.w3.org/2001/xmlschema-instance\" xmlns:xsd=\"http://www.w3.org/2001/xmlschema\" xmlns:soap=\"http://schemas.xmlsoap.org/soap/envelope/\">" 
+"<soap:body />";
string tps,vps,ts;
string mreakstring="";
mreakstring="<"+methodname+" xmlns=\"http://tempuri.org/\">";
for ( int i = 0; i < parameters.size(); i++) {
tps=parameters.get(i).tostring();
//设置该方法的参数为.net webservice中的参数名称
vps=parvalues.get(i).tostring(); 
ts="<"+tps+">"+vps+"</"+tps+">";
mreakstring=mreakstring+ts;
}
mreakstring=mreakstring+"</"+methodname+">";
/*
+"<helloworld xmlns=\"http://tempuri.org/\">"
+"<x>string11661</x>"
+"<sf1>string111</sf1>"
+ "</helloworld>"
*/
string soap2="</soap:envelope>"; 
string requestdata=soap+mreakstring+soap2;
system.out.println(requestdata);
try{
url url =new url(serverurl);
httpurlconnection con=(httpurlconnection)url.openconnection();
byte[] bytes=requestdata.getbytes("utf-8");
con.setdoinput(true);
con.setdooutput(true);
con.setusecaches(false);
con.setconnecttimeout(8000);// 设置超时时间
con.setrequestmethod("post");
con.setrequestproperty("content-type", "text/xml;charset=utf-8");
con.setrequestproperty("soapaction",soapaction);
con.setrequestproperty("content-length",""+bytes.length);
outputstream outstream=con.getoutputstream();
outstream.write(bytes);
outstream.flush();
outstream.close();
inputstream instream=con.getinputstream();
//data=parser(instream);
//system.out.print("11");
values= inputstreamtovaluelist(instream,methodname);
//system.out.println(values.size());
return values;
}
catch(exception e)
{
system.out.print("2221");
return null;
}
}
public arraylist<string> inputstreamtovaluelist (inputstream in,string monthsname) throws ioexception { 
stringbuffer out = new stringbuffer();
string s1="";
byte[] b = new byte[4096]; 
arraylist<string> values=new arraylist<string>();
values.clear();
for (int n; (n = in.read(b)) != -1;) { 
s1=new string(b, 0, n);
out.append(s1);
} 
system.out.println(out);
string[] s13=s1.split("><");
string ifstring=monthsname+"result";
string ts="";
string vs="";
boolean getvalueboolean=false;
for(int i=0;i<s13.length;i++){
ts=s13[i];
system.out.println(ts);
int j,k,l;
j=ts.indexof(ifstring);
k=ts.lastindexof(ifstring);
if (j>=0)
{
system.out.println(j);
if (getvalueboolean==false)
{
getvalueboolean=true;
}
else {
}
if ((j>=0)&&(k>j))
{
system.out.println("fff"+ts.lastindexof("/"+ifstring));
//system.out.println(ts);
l=ifstring.length()+1;
vs=ts.substring(j+l,k-2);
//system.out.println("fff"+vs);
values.add(vs);
system.out.println("退出"+vs);
getvalueboolean=false;
return values; 
}
}
if (ts.lastindexof("/"+ifstring)>=0)
{
getvalueboolean=false;
return values; 
}
if ((getvalueboolean)&&(ts.lastindexof("/"+ifstring)<0)&&(j<0))
{
k=ts.length();
//system.out.println(ts);
vs=ts.substring(7,k-8);
//system.out.println("f"+vs);
values.add(vs);
}
}
return values; 
}
}

需要新建一个数据库访问类，通过httpconnsoap这个类和底层数据库进行通信，操作。这里新建的方法要和你新建webservice时一直，我的webservice是用vs2010,.net 3.5框架搭建的。这里列举两个方法，写法大概就是这样的，网友写的时候要根据自己的需求来写就好了。

public class dbutil 
{
static boolean feeflag=false;
arraylist<string> arraylist=new arraylist<string>();
arraylist<string> brraylist=new arraylist<string>();
arraylist<string> crraylist=new arraylist<string>();
httpconnsoap soaptest=new httpconnsoap(); 
public static connection getconnection()
{
connection con=null; 
try
{
system.out.println("111");
class.forname("org.gjt.mm.mysql.driver");
system.out.println("222");
con=drivermanager.getconnection("jdbc:mysql://192.168.0.100:3306/test?useunicode=true&characterencoding=utf-8","root","123456");
system.out.println("333");
}
catch(exception e)
{
system.out.println("444");
e.printstacktrace();
}
return con;
}
//查询学生信息
public string[] selectstu(string stuno)
{
string ss[]=new string[8];
string result=null;
arraylist.clear();
brraylist.clear();
crraylist.clear();
arraylist.add("stuno");
brraylist.add(stuno);
crraylist=soaptest.getwebservre("selectstu", arraylist, brraylist);
ss[0]=crraylist.get(0);
ss[1]=crraylist.get(1);
ss[2]=crraylist.get(2);
ss[3]=crraylist.get(3);
ss[4]=crraylist.get(4);
ss[5]=crraylist.get(5);
ss[6]=crraylist.get(6);
ss[7]=crraylist.get(7);
return ss;
}
public list<hashmap<string, string>> selectstuall() {
list<hashmap<string, string>> list = new arraylist<hashmap<string, string>>();
arraylist.clear();
brraylist.clear();
crraylist.clear();
crraylist = soaptest.getwebservre("selectstuall", arraylist, brraylist);
/*hashmap<string, string> temphash = new hashmap<string, string>();
temphash.put("s_name", "姓名");
temphash.put("s_age", "年龄");
temphash.put("s_sex", "性别");
list.add(temphash);*/
for (int j = 0; j < crraylist.size(); j += 3) {
hashmap<string, string> hashmap = new hashmap<string, string>();
hashmap.put("s_name", crraylist.get(j));
hashmap.put("s_age", crraylist.get(j + 1));
hashmap.put("s_sex", crraylist.get(j + 2));
list.add(hashmap);
}
return list;
}
}

下面就是android程序中调用了，这里用listview显示数据。

private listview listview;
private dbutil dbutil;
private simpleadapter adapter;
private void setlistview() {
list<hashmap<string, string>> list = new arraylist<hashmap<string, string>>();
list = dbutil.selectstuall();
adapter = new simpleadapter(
daylist.this, 
list, 
r.layout.adapter, 
new string[] { "s_name", "s_age", "s_sex" }, 
new int[] { r.id.textview1, r.id.textview2, r.id.textview3 });
listview.setadapter(adapter);
}

android通过webservice操作sqlserver数据库的相关知识，就给大家介绍这么多，后续还会给大家介绍相关知识，希望大家持续关注本站，谢谢。

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