这是做wap的时候遇到的问题,您遇到类似的问题可以参考一下！
javabean文件:
dataconnection.java;//数据库连接
basicinfo.java;//数据bean容器
datawork.java;//数据操作
servlet文件:
orderinfoservlet.java;//servlet实现长文本数据分页显示
xml配置文件:
web.xml;//servlet配置
dataconnection.java文件内容为：
package wap_cctv_film;
import java.sql.*;
public class dataconnection {
public static connection getdataconnection() {
connection conn = null;
try {
class.forname("com.microsoft.jdbc.sqlserver.sqlserverdriver").newinstance();
conn = drivermanager.getconnection("jdbc:microsoft:sqlserver://127.0.0.1:1433;databasename=wapvod","cctv_sql_user","cctv_sql_user");
}
catch (exception ex) {
ex.printstacktrace();
}
return conn;
}
}
basicinfo.java文件内容：
package wap_cctv_film;
import java.io.*;
public class basicinfo
implements serializable {
private string basicname;
private int basichits;
private int basicid;
private string basictext;
private int basicisshow;
private int basictype;
public string getbasicname() {
return basicname;
}
public void setbasicname(string basicname) {
this.basicname = basicname;
}
public int getbasichits() {
return basichits;
}
public void setbasichits(int basichits) {
this.basichits = basichits;
}
public int getbasicid() {
return basicid;
}
public void setbasicid(int basicid) {
this.basicid = basicid;
}
public string getbasictext() {
return basictext;
}
public void setbasictext(string basictext) {
this.basictext = basictext;
}
public int getbasicisshow() {
return basicisshow;
}
public void setbasicisshow(int basicisshow) {
this.basicisshow = basicisshow;
}
public int getbasictype() {
return basictype;
}
public void setbasictype(int basictype) {
this.basictype = basictype;
}
}
datawork.java文件内容：
package wap_cctv_film;
import java.sql.*;
import java.util.*;
public class datawork {
private connection conn;
public datawork() {
this.conn = dataconnection.getdataconnection();
}
public basicinfo getbasciinfo(string sql) throws exception {
statement stmt = conn.createstatement();
resultset rst = stmt.executequery(sql);
basicinfo basicinfo = null;
while (rst.next()) {
basicinfo = new basicinfo();
basicinfo.setbasicid(rst.getint("basicid"));
basicinfo.setbasictype(rst.getint("basictype"));
basicinfo.setbasicname(rst.getstring("basicname"));
basicinfo.setbasictext(rst.getstring("basictext"));
basicinfo.setbasichits(rst.getint("basichits"));
basicinfo.setbasicisshow(rst.getint("basicisshow"));
}
return basicinfo;
}
orderinfoservlet.java文件内容：
package wap_cctv_film;
import javax.servlet.*;
import javax.servlet.http.*;
import java.io.*;
public class orderinfoservlet
extends httpservlet {
private static final string content_type = "text/vnd.wap.wml;charset=gb2312";
//initialize global variables
public void init() throws servletexception {
}
//process the http get request
public void doget(httpservletrequest request, httpservletresponse response) throws
servletexception, ioexception {
response.setcontenttype(content_type);
printwriter out = response.getwriter();
int articleid;
if (request.getparameter("articleid") == null) {
articleid = 0;
}
else {
articleid = integer.parseint(request.getparameter("articleid"));
}
try {
datawork getinfo = new datawork();
basicinfo basicinfo = getinfo.getbasciinfo(
"select * from basicinfo where basicid=" + articleid);
out.println("<?xml version='1.0'?>");
out.println("<wml>");
out.println("<head>");
out.println("<meta http-equiv='cache-control' content='max-age=0' />");
out.println("</head>");
out.println("<card id='main' title='梦幻掌上剧场--剧情简介--" +
basicinfo.getbasicname() +
"'>");
out.println("<p>");
out.println("《" + basicinfo.getbasicname() + "》剧情简介<br />");
int pagewords = 199; //每一页显示的字数
int pagecount; //所有的页数
int pages; //当前页
//若pages为空,则付值1;否则等于
if (request.getparameter("pages") == null) {
pages = 1;
}
else {
pages = integer.parseint(request.getparameter("pages"));
}
int textlen = basicinfo.getbasictext().length();//文本长度
//求出文本分段得出的总页数;
if (textlen % pagewords == 0) {
pagecount = (int) math.ceil(textlen / pagewords);
}
else {
pagecount = (int) math.ceil(textlen / pagewords) + 1;
}
//当前页面总文本剩余的长度,得出两种条件选择;
int lasttextlen = textlen - pages * pagewords;
//一种是剩余长度大于一页文字的长度,即大于199个字;
if (lasttextlen > pagewords) {
out.println(basicinfo.getbasictext().substring( (pages - 1) *
pagewords,
pages * pagewords) + "(第" + pages + "/" + pagecount + "页)<br />");
}
//一种是剩余文本长度小于一页文字的长度;即是最后一页;
else if (lasttextlen < pagewords) {
out.println(basicinfo.getbasictext().substring( (pages - 1) *
pagewords, textlen - 1) + "(第" + pages + "/" + pagecount +
"页)<br />");
}
//分页
int lastpage = pages - 1; //上一页
int nextpage = pages + 1; //下一页
//总页数大于一则显示分页
if (pagecount > 1) {
if (pages < pagecount) {
out.println("<a href='?articleid=" + articleid +
"&pages=" + nextpage + "'>下一页</a><br />");
}
if (pages != 1) {
out.println("<a href='?articleid=" + articleid +
"&pages=" + lastpage + "'>上一页</a><br />");
}
}
out.println("<a href='indexservlet'>[返回首页]</a><br />");
out.println("<a href='http://wap.monternet.com'>[梦网首页]</a><br />");
out.println("</p>");
out.println("</card>");
out.println("</wml>");
}
catch (exception ex) {
}
}
//clean up resources
public void destroy() {
}
}
web.xml文件中新增：
<servlet>
<servlet-name>orderinfoservlet</servlet-name>
<servlet-class>wap_cctv_film.orderinfoservlet</servlet-class>
</servlet>
<servlet-mapping>
<servlet-name>orderinfoservlet</servlet-name>
<url-pattern>/orderinfoservlet</url-pattern>
</servlet-mapping>
其他编译配置就不多说了，这里面有什么错误或者您有好的建议请mail:webmaster@aliang.org,谢谢！让我们共同学习！！
闽公网安备 35060202000074号