java 导出pdf的自定义标签
public class ERTagUtil {
/**
* Function 创建js文件
* CreateTime 2014年7月22日
* @author yyh
* @param pageContext
* @version 1.1.0
*/
public void createReportJS(PageContext pageContext){
try{
HttpServletRequest request=(HttpServletRequest)pageContext.getRequest();
// String root=request.getRealPath("/");
String root=request.getSession().getServletContext().getRealPath("/");
File file=new File(root,"er_js");
if(!file.exists()){
file.mkdir();
}
//生成Report JS
String createPath=root+"er_js\\";
file=new File(createPath,"export_report.js");
if(!file.exists()){
file.createNewFile();
createJs(root,createPath);
}
}catch(Exception e){
e.printStackTrace();
}
}
/**
* Function 将js文件拷贝到服务器下
* CreateTime 2014年7月22日
* @author yyh
* @param root
* @param createPath
* @version 1.1.0
*/
private void createJs(String root,String createPath){
try {
InputStream is=this.getClass().getResourceAsStream("/META-INF/export_report.js");
BufferedReader br=new BufferedReader(new InputStreamReader(is));
FileWriter fw = new FileWriter(createPath+"\\export_report.js");
BufferedWriter bw = new BufferedWriter(fw);
String myreadline;
while (br.ready()) {
myreadline = br.readLine();
bw.write(myreadline);
bw.newLine();
}
bw.close();
br.close();
fw.close();
br.close();
is.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
/**
* Function：报表导出标签
* CreateTime：2014年7月22日
* @author yyh
* @version 1.1.0
*
*/
public class ExportReportTag extends BodyTagSupport{
/**
*
*/
private static final long serialVersionUID = 1L;
private Object tableId; //tableID
// private String tableId; //tableID
private String title; //文档标题
private String tableTitle; //Table的标题
private String types; //报表类型(支持pdf,word,excel,jpg)
private String url; //请求路径
private String classs; //样式
private String icons; //
private String imageId; //图片id
private String imageUrl; //图片url
@Override
public int doEndTag() throws JspException {
JspWriter out = pageContext.getOut();
try {
//new ERTagUtil().createReportJS(pageContext);
HttpServletRequest request=(HttpServletRequest)pageContext.getRequest();
out.print("<script type=\"text/javascript\" src=\""+request.getContextPath()+"/js/export_report.js\"></script>");
} catch (Exception e) {
e.printStackTrace();
}
return super.doEndTag();
}
@Override
public int doStartTag() throws JspException {
JspWriter out = pageContext.getOut();
try{
String er_types []=(null!=this.getTypes() && !"".equals(this.getTypes())) ? this.getTypes().split(",") : null;
String er_classs []=(null!=this.getClasss() && !"".equals(this.getClasss())) ? this.getClasss().split(",") : null;
String er_icons []=(null!=this.getIcons() && !"".equals(this.getIcons())) ? this.getIcons().split(",") : null;
StringBuffer sbER=new StringBuffer();
if(null!=er_types && er_types.length>0){
for(int i=0;i<er_types.length;i++){
if(null!=er_types[i] && !"".equals(er_types[i].trim()) && "pdf".equalsIgnoreCase(er_types[i])){
sbER.append(" <a id=\"expor_pdf\" class=\""+getStypeC(er_classs,i)+"\" icon=\""+getStyleIcon(er_icons,i)+"\" href=\"javascript:export_report('"+this.tableId+"','pdf','"+this.title+"','"+this.url+ "','" + this.imageId + "');\" >导出"+er_types[i]+"</a>");
}
if(null!=er_types[i] && !"".equals(er_types[i].trim()) && "excel".equalsIgnoreCase(er_types[i])){
sbER.append(" <a id=\"expor_excel\" class=\""+getStypeC(er_classs,i)+"\" icon=\""+getStyleIcon(er_icons,i)+"\" href=\"javascript:export_report('"+this.tableId+"','excel','"+this.title+"','"+this.url+ "','" + this.imageId + "');\" >导出"+er_types[i]+"</a>");
}
if(null!=er_types[i] && !"".equals(er_types[i].trim()) && "word".equalsIgnoreCase(er_types[i])){
sbER.append(" <a id=\"expor_word\" class=\""+getStypeC(er_classs,i)+"\" icon=\""+getStyleIcon(er_icons,i)+"\" href=\"javascript:export_report('"+this.tableId+"','word','"+this.title+"','"+this.url+ "','" + this.imageId + "');\" >导出"+er_types[i]+"</a>");
}
if(null!=er_types[i] && !"".equals(er_types[i].trim()) && "jpg".equalsIgnoreCase(er_types[i])){
sbER.append(" <a id=\"expor_Jpg\" class=\""+getStypeC(er_classs,i)+"\" icon=\""+getStyleIcon(er_icons,i)+"\" href=\"javascript:export_report('"+this.tableId+"','jpg','"+this.title+"','"+this.url+"');\" >导出"+er_types[i]+"</a>");
}
}
out.print(sbER);
}
}catch(Exception e){
e.printStackTrace();
}
return super.doStartTag();
}
/**
* Function：报表导出标签
* CreateTime：2014年7月22日
* @author yyh
* @param er_classs
* @param i
* @return String 当前有效样式
*/
private String getStypeC(String[] er_classs ,int i){
String cl = "";
if (null != er_classs && er_classs.length > 0) {
if (er_classs.length > 1 && er_classs.length>=(i+1)) {
cl = er_classs[i];
} else {
cl = er_classs[er_classs.length - 1];
}
}
return cl;
}
/**
* Function：报表导出标签
* CreateTime：2014年7月22日
* @author chenck
* @param er_icons
* @param i
* @return 当前有效icon
*/
private String getStyleIcon(String[] er_icons ,int i){
String icon="";
if(null!=er_icons && er_icons.length>0 ){
if(er_icons.length>1 && er_icons.length>=(i+1)){
icon=(null!=er_icons[i]) ? er_icons[i] : er_icons[0];
}else{
icon=er_icons[er_icons.length-1];
}
}
return icon;
}
public Object getTableId() {
return tableId;
}
public void setTableId(Object tableId) throws JspException {
this.tableId = (String) ExpressionEvaluatorManager.evaluate("tableId", tableId.toString(), Object.class, this, pageContext);
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public String getTableTitle() {
return tableTitle;
}
public void setTableTitle(String tableTitle) {
this.tableTitle = tableTitle;
}
public String getTypes() {
return types;
}
public void setTypes(String types) {
this.types = types;
}
public String getUrl() {
return url;
}
public void setUrl(String url) {
this.url = url;
}
public String getClasss() {
return classs;
}
public void setClasss(String classs) {
this.classs = classs;
}
public String getIcons() {
return icons;
}
public void setIcons(String icons) {
this.icons = icons;
}
public String getImageId() {
return imageId;
}
public void setImageId(String imageId) {
this.imageId = imageId;
}
public String getImageUrl() {
return imageUrl;
}
public void setImageUrl(String imageUrl) {
this.imageUrl = imageUrl;
}
}