SearchPanel() {
            this.setLayout(new BorderLayout());
            this.setBorder(new TitledBorder("分类检索"));
            firs_container.setLayout(new FlowLayout(FlowLayout.LEFT));
            firs_container.add(src_startLabel);
            firs_container.add(src_start);
            firs_container.add(src_endLabel);
            firs_container.add(src_end);
            firs_container.add(des_startLabel);
            firs_container.add(des_start);
            firs_container.add(des_endLabel);
            firs_container.add(des_end);
            sec_container.setLayout(new FlowLayout(FlowLayout.LEFT));
            sec_container.add(typechoice);
            sec_container.add(portLabel);
            sec_container.add(port);
            sec_container.add(searchButton);
            container.setLayout(new GridLayout(2, 1));
            container.add(firs_container);
            container.add(sec_container);
            this.add(container, BorderLayout.NORTH);
            JTable table = new JTable(result, object);
            JScrollPane scrollPane = new JScrollPane(table);
            this.add(scrollPane, BorderLayout.CENTER);
        }