report-parent/src/main/java/com/uas/report/controller/PrintController.java

package com.uas.report.controller;

import java.io.IOException;
import java.io.OutputStream;
import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletResponse;

import org.apache.commons.lang.ArrayUtils;
import org.apache.log4j.Logger;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Controller;
import org.springframework.util.StringUtils;
import org.springframework.web.bind.annotation.RequestMapping;
import org.springframework.web.bind.annotation.ResponseBody;

import com.uas.report.service.PrintService;

/**
 * 报表打印
 * 
 * @author sunyj
 * @since 2016年8月16日 下午3:49:02
 */

@Controller
@RequestMapping("/print")
public class PrintController {

	private static Logger logger = Logger.getLogger(PrintController.class);

	@Autowired
	private PrintService printService;

	/**
	 * 打印报表
	 * 
	 * @param reportName
	 *            不为null；需要打印的报表的名称，不带任何后缀（如打印采购单，即为"Purchase"）
	 * @param whereCondition
	 *            可为null；where之后的条件（包括where）
	 * @param otherParameters
	 *            若模板已指定需要的参数，则不可为null；其他参数，区别于whereCondition，报表某些字段的值取决于这些参数
	 * @param response
	 * @return
	 */
	@RequestMapping("")
	@ResponseBody
	public String print(String reportName, String whereCondition, Map<String, Object> otherParameters,
			HttpServletResponse response) {
		String message = "";
		if (StringUtils.isEmpty(reportName)) {
			message = "报表名称无效！";
			logger.error(message);
			return message;
		}

		logger.info("开始打印报表： " + reportName);
		byte[] results = printService.print(reportName, whereCondition, otherParameters);
		if (ArrayUtils.isEmpty(results)) {
			message = "报表 " + reportName + " 打印失败！";
			logger.error(message);
			return message;
		}

		OutputStream outputStream = null;
		try {
			response.setContentType("application/pdf");
			outputStream = response.getOutputStream();
			outputStream.write(results);
			outputStream.flush();
			outputStream.close();
		} catch (IOException e) {
			logger.error("连接被关闭！");
			e.printStackTrace();
		}

		message = "报表 " + reportName + " 打印完成！";
		logger.info(message);
		return message;
	}

	/**
	 * 测试打印
	 * 
	 * @param response
	 * @return
	 */
	@RequestMapping("/test")
	@ResponseBody
	public String testPrint(HttpServletResponse response) {
		String reportName = "Purchase";
		String whereCondition = "where pu_code = 'MP160800017' and pd_qty > 1000";
		Map<String, Object> otherParameters = new HashMap<>();
		otherParameters.put("OTHER_PARAMETER_1", "天气真好！");
		return print(reportName, whereCondition, otherParameters, response);
	}
}