iReport+jasperReport之NoXML

jasperReport的这个包net.sf.jasperreports.engine.design 是这样描述的：Contains design time implementations for the library's main interfaces as well as report compiling tools.因此我们完全可以使用它的API构建自己的报表，还是和前几篇使用同一个数据库表。
        构建JasperDesign对象：
设置一些对应的属性：

// JasperDesign
        JasperDesign jasperDesign = new JasperDesign();
        jasperDesign.setName("NoXmlDesignReport");
        jasperDesign.setPageWidth(595);
        jasperDesign.setPageHeight(842);
        jasperDesign.setColumnWidth(515);
        jasperDesign.setColumnSpacing(0);
        jasperDesign.setLeftMargin(40);
        jasperDesign.setRightMargin(40);
        jasperDesign.setTopMargin(50);
        jasperDesign.setBottomMargin(50);

字体：

// Fonts
        JRDesignStyle normalStyle = new JRDesignStyle();
        normalStyle.setName("Arial_Normal");
        normalStyle.setDefault(true);
        normalStyle.setFontName("Arial");
        normalStyle.setFontSize(12);
        normalStyle.setPdfFontName("Helvetica");
        normalStyle.setPdfEncoding("Cp1252");
        normalStyle.setPdfEmbedded(false);
        jasperDesign.addStyle(normalStyle);

        JRDesignStyle boldStyle = new JRDesignStyle();
        boldStyle.setName("Arial_Bold");
        boldStyle.setFontName("Arial");
        boldStyle.setFontSize(12);
        boldStyle.setBold(true);
        boldStyle.setPdfFontName("Helvetica-Bold");
        boldStyle.setPdfEncoding("Cp1252");
        boldStyle.setPdfEmbedded(false);
        jasperDesign.addStyle(boldStyle);

        JRDesignStyle italicStyle = new JRDesignStyle();
        italicStyle.setName("Arial_Italic");
        italicStyle.setFontName("Arial");
        italicStyle.setFontSize(12);
        italicStyle.setItalic(true);
        italicStyle.setPdfFontName("Helvetica-Oblique");
        italicStyle.setPdfEncoding("Cp1252");
        italicStyle.setPdfEmbedded(false);
        jasperDesign.addStyle(italicStyle);

定义报表的参数，并添加到报表设计器上

// Parameters
        JRDesignParameter parameter = new JRDesignParameter();
        parameter.setName("ReportTitle");
        parameter.setValueClass(java.lang.String.class);
        jasperDesign.addParameter(parameter);

定义报表的字段，这些字段是最终显示到报表上的域

// Fields
        JRDesignField field = new JRDesignField();
        field.setName("userid");
        field.setValueClass(java.lang.Integer.class);
        jasperDesign.addField(field);

        field = new JRDesignField();
        field.setName("name");
        field.setValueClass(java.lang.String.class);
        jasperDesign.addField(field);

        field = new JRDesignField();
        field.setName("sex");
        field.setValueClass(java.lang.String.class);
        jasperDesign.addField(field);

        field = new JRDesignField();
        field.setName("age");
        field.setValueClass(java.lang.String.class);
        jasperDesign.addField(field);

        field = new JRDesignField();
        field.setName("password");
        field.setValueClass(java.lang.String.class);
        jasperDesign.addField(field);

        field = new JRDesignField();
        field.setName("department");
        field.setValueClass(java.lang.String.class);
        jasperDesign.addField(field);

        JRDesignBand band = null;
        JRDesignTextField textField = null;
        JRDesignExpression expression = null;

开始画报表主体的title部分，不需要的部分可以不用代码标识出来，title部分放置了报表标题字段，只会出现在第一页的上方

// title
        band = new JRDesignBand();
        band.setHeight(50);
        textField = new JRDesignTextField();
        textField.setBlankWhenNull(true);
        textField.setX(0);
        textField.setY(10);
        textField.setWidth(500);
        textField.setHeight(30);
        textField.setHorizontalAlignment(JRAlignment.HORIZONTAL_ALIGN_CENTER);
        textField.setStyle(normalStyle);
        textField.setFontSize(22);
        expression = new JRDesignExpression();
        expression.setValueClass(java.lang.String.class);
        expression.setText("$P{ReportTitle}");
        textField.setExpression(expression);
        band.addElement(textField);
        jasperDesign.setTitle(band);

detail部分：排列域的位置，并设置它的值，没一个域的值会最为一个 JRDesignExpression出现

// Detail
        // pid
        band = new JRDesignBand();
        band.setHeight(20);

        textField = new JRDesignTextField();
        textField.setX(5);
        textField.setY(4);
        textField.setWidth(100);
        textField.setHeight(15);
        textField.setHorizontalAlignment(JRAlignment.HORIZONTAL_ALIGN_RIGHT);
        textField.setStyle(normalStyle);
        expression = new JRDesignExpression();
        expression.setValueClass(java.lang.Integer.class);
        expression.setText("$F{userid}");
        textField.setExpression(expression);
        band.addElement(textField);
        // name
        textField = new JRDesignTextField();
        textField.setStretchWithOverflow(true);
        textField.setX(120);
        textField.setY(4);
        textField.setWidth(80);
        textField.setHeight(15);
        textField.setPositionType(JRElement.POSITION_TYPE_FLOAT);
        textField.setStyle(normalStyle);
        expression = new JRDesignExpression();
        expression.setValueClass(java.lang.String.class);
        expression.setText("$F{name}");
        textField.setExpression(expression);
        band.addElement(textField);

        // sex
        textField = new JRDesignTextField();
        textField.setStretchWithOverflow(true);
        textField.setX(200);
        textField.setY(4);
        textField.setWidth(30);
        textField.setHeight(15);
        textField.setPositionType(JRElement.POSITION_TYPE_FLOAT);
        textField.setStyle(normalStyle);
        expression = new JRDesignExpression();
        expression.setValueClass(java.lang.String.class);
        expression.setText("$F{sex}");
        textField.setExpression(expression);
        band.addElement(textField);
        // age
        textField = new JRDesignTextField();
        textField.setStretchWithOverflow(true);
        textField.setX(240);
        textField.setY(4);
        textField.setWidth(30);
        textField.setHeight(15);
        textField.setPositionType(JRElement.POSITION_TYPE_FLOAT);
        textField.setStyle(normalStyle);
        expression = new JRDesignExpression();
        expression.setValueClass(java.lang.String.class);
        expression.setText("$F{age}");
        textField.setExpression(expression);
        band.addElement(textField);
        // password
        textField = new JRDesignTextField();
        textField.setStretchWithOverflow(true);
        textField.setX(270);
        textField.setY(4);
        textField.setWidth(80);
        textField.setHeight(15);
        textField.setPositionType(JRElement.POSITION_TYPE_FLOAT);
        textField.setStyle(normalStyle);
        expression = new JRDesignExpression();
        expression.setValueClass(java.lang.String.class);
        expression.setText("$F{password}");
        textField.setExpression(expression);
        band.addElement(textField);
        // department
        textField = new JRDesignTextField();
        textField.setStretchWithOverflow(true);
        textField.setX(350);
        textField.setY(4);
        textField.setWidth(80);
        textField.setHeight(15);
        textField.setPositionType(JRElement.POSITION_TYPE_FLOAT);
        textField.setStyle(normalStyle);
        expression = new JRDesignExpression();
        expression.setValueClass(java.lang.String.class);
        expression.setText("$F{department}");
        textField.setExpression(expression);
        band.addElement(textField);

JasperReport对象可以使用下面这句产生：

JasperCompileManager.compileReport(jasperDesign);

至此一个完整的报表就可以显示出来了。