常用JAVA方法

<%!
stc_RSYB_Name stcRSYName1[];
stc_SYB_INF stcSYBINF1[];
%>
<%/*
String p = (String) session.getValue("access");
if (p==null || !p.equals("1")) {
response.sendRedirect("error.htm");
return;
}*/
%>
<%!
file://得到机器名字或IP
String get_Myhostname(javax.servlet.http.HttpServletRequest request){
String myhostname = null;
try{
myhostname = request.getRemoteHost();
myhostname = myhostname.toUpperCase();
}catch(Exception e){}
return myhostname;
}
file://处理空字符串
String dealNull(String str) {
String returnstr = null;
if (str == null) returnstr = "";
else returnstr = str;
return returnstr;
}
file://处理空对象
Object dealNull(Object obj){
Object returnstr = null;
if (obj == null) returnstr = (Object)("");
else returnstr = obj;
return returnstr;
}
int dealEmpty(String s) {
s = dealNull(s);
if (s.equals("")) return 0;
return Integer.parseInt(s);
}
String replace(String str,String substr,String restr){
String[] tmp = split(str,substr);
String returnstr = null;
if(tmp.length!=0) {
returnstr = tmp[0];
for(int i = 0 ; i < tmp.length - 1 ; i )
returnstr =dealNull(returnstr) restr tmp[i 1];
}
return dealNull(returnstr);
}
String htmlEncode(String txt){
txt = replace(txt,"&","&");
txt = replace(txt,"&","&");
txt = replace(txt,""",""");
txt = replace(txt,""",""");
txt = replace(txt,"<","<");
txt = replace(txt,"<","<");
txt = replace(txt,">",">");
txt = replace(txt,">",">");
txt = replace(txt," "," ");

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