Java + jasperreports + ireport

If you encounter report problems in the project, record the main processes and problems and forget them.

1. Environment

Jdk1.5, jasperreports-1.1.1, iReport-1.1.0

2. Chinese problems

A, remember to itext-1.3.1.jar, itextasian. Jar these two packages in the iReport-1.1.0/lib directory, the two packages to see, probably can be seen is used to define the font style and other functions;

B. In ireport, set the following parameters correctly, as shown in figure

I forgot the exception information in the bottom column and thought it was a packet problem. It took a long time.

Net. SF. jasperreports. Engine. jrexception: cocould not load the following Font:
Pdffontname: stsong-light
Pdfencoding: cp1250
Ispdfembedded: True

3. Prepare reports

A, first use ireport to design the report style, variables, compiled into the. Jasper file, the existence of the Directory: F:/jasperreports-1.1.1-project/iReport-1.1.0/result.

B. Load the file in the program, fill in the data, and output the. PFD file to the directory above. The Code is as follows:

Import net. SF. jasperreports. Engine. jasperexportmanager;
Import net. SF. jasperreports. Engine. jasperfillmanager;
Import net. SF. jasperreports. Engine. jasperprint;
Import net. SF. jasperreports. Engine. jasperreport;
Import net. SF. jasperreports. Engine. util. jrloader;

....................

Try ...{
Connection conn = Dao. getconnection ();
File jasperfile = new file ("F:/jasperreports-1.1.1-project/iReport-1.1.0/result/lbssreport1.jasper ");
Hashmap Param = new hashmap ();
Param. Put ("ID", "reportid"); // pass the parameter;
Param. Put ("strhql", "select loginname, lastname from t_user t ");
// Directly export the document generated during the filling process to the PDF Format
// Jasperrunmanager. runreporttopdffile ("F:/jasperreports-1.1.1-project/iReport-1.1.0/result/lbssreport1.jasper", Param, Conn );

// Standard process: generate the intermediate Print Object and export it to another format.
// Load object
Jasperreport report = (jasperreport) jrloader. loadobjectfromlocation ("F:/jasperreports-1.1.1-project/iReport-1.1.0/result/lbssreport1.jasper ");
// Fill in data
Jasperprint print = jasperfillmanager. fillreport (report, Param, Conn );
// Export to PDF (the itextasian. jar package must be included );
Jasperexportmanager. exportreporttopdffile (print, "F:/jasperreports-1.1.1-project/iReport-1.1.0/result/lbssreport1.pdf ");
} Catch (exception e )...{
Logger. Error ("report generation error:" + E. getmessage ());
Throw new exception ("report generation error:" + E. getmessage ());
}

To put the jasperreports-1.1.1.jar, itext-1.3.1.jar, itextasian. jar package under the project Lib, jasperreports contains all the relevant classes, in the program can be called directly.

In the code, Param. put ("ID", "reportid"); // pass the parameter; Param. put ("strhql", "select loginname, lastname from t_user t"); "ID" and "strhql" are external variables in the report. Corresponds to the port, as shown below:

Okay, it's almost done. Check the running PDF file.