区块链相关命令

for Mac

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geth init "/Users/sentient3326/Desktop/geth/genesis.json" --datadir  "/Users/sentient3326/Desktop/geth/chaindata"

geth attach rpc:http://localhost:8545

geth --datadir /Users/sentient3326/Desktop/geth/chaindata --networkid 15  --http  --http.api "eth,web3,miner,admin,personal,net" --http.corsdomain "*"  --allow-insecure-unlock --nodiscover --dev --dev.period 1

personal.unlockAccount(eth.accounts[0],"123456")

eth.sendTransaction({from:eth.accounts[0],to:eth.accounts[1],value:3000000000000000000})

eth.getBalance(eth.accounts[1])

--dev Ephemeral proof-of-authority network with a pre-funded developer account, mining enabled --dev.period value Block periodtouseindeveloper mode (0= mine onlyiftransaction pending) (default:0)

for Windows

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geth init "C:\geth\genesis.json" --datadir  "C:\geth\chaindata "

geth --datadir  "C:\geth\chaindata " --rpc --rpcapi  "eth,web3,miner,admin,personal,net"  --rpccorsdomain "*" --nodiscover --networkid 15 --allow-insecure-unlock

pojo

Order

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package edu.wtbu.pojo;

public class Order {
	private int id;
	private String imgUrl;
	private String goodsName;
	private float orderPrice;
	private String buyTime;
	private String payTime;
	private int status;
	private String transactionHash;
	private String orderAddress;
	private String userEmail;
	
	public Order() {
		super();
		
	}
	
	public Order(int id, String imgUrl, String goodsName, float orderPrice, String buyTime, String payTime, int status,
			String transactionHash, String orderAddress, String userEmail) {
		super();
		this.id = id;
		this.imgUrl = imgUrl;
		this.goodsName = goodsName;
		this.orderPrice = orderPrice;
		this.buyTime = buyTime;
		this.payTime = payTime;
		this.status = status;
		this.transactionHash = transactionHash;
		this.orderAddress = orderAddress;
		this.userEmail = userEmail;
	}

	public int getId() {
		return id;
	}

	public void setId(int id) {
		this.id = id;
	}

	public String getImgUrl() {
		return imgUrl;
	}

	public void setImgUrl(String imgUrl) {
		this.imgUrl = imgUrl;
	}

	public String getGoodsName() {
		return goodsName;
	}

	public void setGoodsName(String goodsName) {
		this.goodsName = goodsName;
	}

	public float getOrderPrice() {
		return orderPrice;
	}

	public void setOrderPrice(float orderPrice) {
		this.orderPrice = orderPrice;
	}

	public String getBuyTime() {
		return buyTime;
	}

	public void setBuyTime(String buyTime) {
		this.buyTime = buyTime;
	}

	public String getPayTime() {
		return payTime;
	}

	public void setPayTime(String payTime) {
		this.payTime = payTime;
	}

	public int getStatus() {
		return status;
	}

	public void setStatus(int status) {
		this.status = status;
	}

	public String getTransactionHash() {
		return transactionHash;
	}

	public void setTransactionHash(String transactionHash) {
		this.transactionHash = transactionHash;
	}

	public String getOrderAddress() {
		return orderAddress;
	}

	public void setOrderAddress(String orderAddress) {
		this.orderAddress = orderAddress;
	}

	public String getUserEmail() {
		return userEmail;
	}

	public void setUserEmail(String userEmail) {
		this.userEmail = userEmail;
	}
	
	
	
	
}

OrderDetail

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package edu.wtbu.pojo;

public class OrderDetail {
	private String orderAddress;
	private String goodsPrice;
	private String goodsNum;
	private String orderPrice;
	private String buyerAddress;
	private String sellerAddress;
	private String buyTime;
	private String payTime;
	private String status;
	
	public String getOrderAddress() {
		return orderAddress;
	}
	public void setOrderAddress(String orderAddress) {
		this.orderAddress = orderAddress;
	}
	public String getGoodsPrice() {
		return goodsPrice;
	}
	public void setGoodsPrice(String goodsPrice) {
		this.goodsPrice = goodsPrice;
	}
	public String getGoodsNum() {
		return goodsNum;
	}
	public void setGoodsNum(String goodsNum) {
		this.goodsNum = goodsNum;
	}
	public String getOrderPrice() {
		return orderPrice;
	}
	public void setOrderPrice(String orderPrice) {
		this.orderPrice = orderPrice;
	}
	public String getBuyerAddress() {
		return buyerAddress;
	}
	public void setBuyerAddress(String buyerAddress) {
		this.buyerAddress = buyerAddress;
	}
	public String getSellerAddress() {
		return sellerAddress;
	}
	public void setSellerAddress(String sellerAddress) {
		this.sellerAddress = sellerAddress;
	}
	public String getBuyTime() {
		return buyTime;
	}
	public void setBuyTime(String buyTime) {
		this.buyTime = buyTime;
	}
	public String getPayTime() {
		return payTime;
	}
	public void setPayTime(String payTime) {
		this.payTime = payTime;
	}
	public String getStatus() {
		return status;
	}
	public void setStatus(String status) {
		this.status = status;
	}
	
	public OrderDetail() {
		super();
		
	}
	
	public OrderDetail(String orderAddress, String goodsPrice, String goodsNum, String orderPrice, String buyerAddress,
			String sellerAddress, String buyTime, String payTime, String status) {
		super();
		this.orderAddress = orderAddress;
		this.goodsPrice = goodsPrice;
		this.goodsNum = goodsNum;
		this.orderPrice = orderPrice;
		this.buyerAddress = buyerAddress;
		this.sellerAddress = sellerAddress;
		this.buyTime = buyTime;
		this.payTime = payTime;
		this.status = status;
	}
	
	
	
	
}

Helper

MySqlHelper

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package edu.wtbu.helper;

import java.sql.ResultSet;
import java.sql.Connection;
import java.sql.DriverManager;
import java.sql.PreparedStatement;
import java.sql.SQLException;

public class MySqlHelper {
	
	private static String driver="com.mysql.cj.jdbc.Driver";
	private static String url = "jdbc:mysql://localhost:3306/geth?serverTimezone=GMT%2B8&userUnicode=true&characterEncoding=UTF-8";
	private static String user = "root";
	private static String password = "123456";
	
	private static Connection conn = null;
	private static PreparedStatement prep = null;
	private static ResultSet rs = null;
	
	static {
		try {
			Class.forName(driver);
		} catch (Exception e) {}
	}
	
	public static int executeUpdate(String sql,Object [] param) {
		int result = 0;
		try {
			conn = DriverManager.getConnection(url,user,password);
			prep = conn.prepareStatement(sql);
			
			if(param != null) {
				
				for(int i = 0;i < param.length;i++) {
					String className = param[i].getClass().getName();
					if(className.contains("String")) {
						prep.setString(i+1, param[i].toString());
					}else if(className.contains("Integer")) {
						prep.setInt(i+1, Integer.parseInt(param[i].toString()));
					}else if(className.contains("Float")) {
						prep.setFloat(i+1, Float.parseFloat(param[i].toString()));
					}
				}
			}
			result = prep.executeUpdate();
		}catch(SQLException e) {}
		
		CloseAll();
		return result;
	}
	
	public static ResultSet executeQuery(String sql,Object [] param) {
		
		try {
			conn = DriverManager.getConnection(url,user,password);
			prep = conn.prepareStatement(sql);
			
			if(param != null) {
				
				for(int i = 0;i < param.length;i++) {
					String className = param[i].getClass().getName();
					if(className.contains("String")) {
						prep.setString(i+1, param[i].toString());
					}else if(className.contains("Integer")) {
						prep.setInt(i+1, Integer.parseInt(param[i].toString()));
					}else if(className.contains("Float")) {
						prep.setFloat(i+1, Float.parseFloat(param[i].toString()));
					}
				}
			}
			rs = prep.executeQuery();
		}catch(SQLException e) {}
		
		return rs;
	}
	
	public static void CloseAll() {
		if(conn != null) {
			try {
				conn.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
		
		if(prep != null) {
			try {
				prep.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
		
		if(rs != null) {
			try {
				rs.close();
			} catch (SQLException e) {
				e.printStackTrace();
			}
		}
	}
	
	
}


#Eth

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package edu.wtbu.eth;

import java.io.IOException;
import java.math.BigInteger;
import java.util.Arrays;
import java.util.List;

import org.web3j.abi.FunctionEncoder;
import org.web3j.abi.FunctionReturnDecoder;
import org.web3j.abi.TypeReference;
import org.web3j.abi.datatypes.Function;
import org.web3j.abi.datatypes.Type;
import org.web3j.abi.datatypes.Utf8String;
import org.web3j.abi.datatypes.generated.Uint256;
import org.web3j.protocol.Web3j;
import org.web3j.protocol.admin.Admin;
import org.web3j.protocol.admin.methods.response.NewAccountIdentifier;
import org.web3j.protocol.admin.methods.response.PersonalListAccounts;
import org.web3j.protocol.admin.methods.response.PersonalUnlockAccount;
import org.web3j.protocol.core.DefaultBlockParameterName;
import org.web3j.protocol.core.Request;
import org.web3j.protocol.core.methods.request.Transaction;
import org.web3j.protocol.core.methods.response.EthCall;
import org.web3j.protocol.core.methods.response.EthGetBalance;
import org.web3j.protocol.core.methods.response.EthGetTransactionReceipt;
import org.web3j.protocol.core.methods.response.EthSendTransaction;
import org.web3j.protocol.http.HttpService;
import org.web3j.tx.Contract;
import org.web3j.utils.Convert;

import edu.wtbu.pojo.OrderDetail;

public class EthService {
	private static Admin admin = null;
	private static Web3j web3j = null;
	private static String SystemPassword = "123456";
	private static String BINCODE = "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";
	static {
		HttpService service = new HttpService("http://127.0.0.1:8545");
		admin = Admin.build(service);
		web3j = Web3j.build(service);
	}

	public static String createAccount(String password) {
		String address = null;
		try {
			Request<?, NewAccountIdentifier> request = admin.personalNewAccount(password);
			NewAccountIdentifier response = request.send();
			address = response.getAccountId();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return address;
	}

	public static String getBalance(String address) {
		String balance = "0";
		Request<?, EthGetBalance> request = web3j.ethGetBalance(address, DefaultBlockParameterName.LATEST);
		try {
			EthGetBalance response = request.send();
 			balance = Convert.fromWei(response.getBalance().toString(), Convert.Unit.ETHER).toString();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return balance;
	}

	public static Boolean unlockAccount(String address, String password) {
		Boolean result = false;
		try {
			Request<?, PersonalUnlockAccount> request = admin.personalUnlockAccount(address, password);
			PersonalUnlockAccount response = request.send();
			Boolean unlockResult = response.getResult();
			if (unlockResult != null && unlockResult) {
				result = true;
			}
		} catch (IOException e) {
			e.printStackTrace();
		}
		return result;
	}

 	public static Boolean transferEther(String from, String to, String amount, String password) {
		Boolean result = false;
		try {
 			Boolean unlockResult = unlockAccount(from, password);
 			
 			if (unlockResult) {
				 
				BigInteger value = Convert.toWei(amount, Convert.Unit.ETHER).toBigInteger();
				 
				Transaction transaction = Transaction.createEtherTransaction(from, null, null, Contract.GAS_LIMIT, to,value);
				 
				Request<?, EthSendTransaction> request = web3j.ethSendTransaction(transaction);
			 
				EthSendTransaction response = request.sendAsync().get();
				 
				String transactionHash = response.getResult();
				if (transactionHash != null) {
					result = true;
				}
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return result;
	}

	public static String getSysAddress() {
		String sysAddress = null;
		try {
			 
			Request<?, PersonalListAccounts> request = admin.personalListAccounts();
			 
			PersonalListAccounts response = request.send();
			 
			List<String> accountList = response.getAccountIds();
			 
			sysAddress = accountList.get(0);
		} catch (Exception e) {
			 
			e.printStackTrace();
		}
		return sysAddress;
	}

	 
	public static Boolean recharge(String userAddress, String amount) {
		Boolean result = false;
		 
		String sysAddress = getSysAddress();
		 
		result = transferEther(sysAddress, userAddress, amount, SystemPassword);
		return result;
	}

	//
	// start from here
	//
	
	public static String deployOrderContract(String goodsPrice,int goodsNum,String orderPrice,    String buyerAddress,String sellerAddress,String buyTime) { 
		String transactionHash = null;   
		Boolean unlockResult = unlockAccount(sellerAddress,"123456");    
		if(unlockResult) {    
			try {    
				String encode = FunctionEncoder.encodeConstructor(Arrays.asList(new Utf8String(goodsPrice),new Uint256(goodsNum),new Utf8String(orderPrice),new Utf8String(buyerAddress),new Utf8String(sellerAddress),new Utf8String(buyTime)));  
				Transaction transaction = Transaction.createContractTransaction(sellerAddress, null, null, BINCODE+encode);  
				Request<?, EthSendTransaction> request = web3j.ethSendTransaction(transaction);  
				EthSendTransaction response = request.sendAsync().get();  
				transactionHash = response.getResult();  
			} catch (Exception e) { }   
		}
		
			return transactionHash; 
			
		
	}
	
	public static String getOrderAddressByHash(String transactionHash) {
		String orderAddress = null;
		try {
			Request<?, EthGetTransactionReceipt> request = web3j.ethGetTransactionReceipt(transactionHash);
			EthGetTransactionReceipt response = request.send();
			orderAddress = response.getResult().getContractAddress();
		} catch (IOException e) {
			e.printStackTrace();
		}
		return orderAddress;
	}

	public static Boolean payOrder(String userAddress, String contractAddress, String payTime, String password) {
		Boolean result = false;
		try {
			Boolean unlockResult = unlockAccount(userAddress, password);
			if (unlockResult) {
				Function function = new Function("payOrder", Arrays.asList(new Utf8String(payTime)), Arrays.asList());
				String encode = FunctionEncoder.encode(function);
				Transaction transaction = Transaction.createFunctionCallTransaction(userAddress, null, null,
						Contract.GAS_LIMIT, contractAddress, encode);
				Request<?, EthSendTransaction> request = web3j.ethSendTransaction(transaction);
				EthSendTransaction response = request.sendAsync().get();
				String transactionHash = response.getResult();
				if (transactionHash != null) {
					result = true;
				}
			}
		} catch (Exception e) {
			e.printStackTrace();
		}
		return result;
	}
	
	public static OrderDetail getOrderInfo(String userAddress, String orderAddress) {
		OrderDetail detail = null;
		try {
			Function function = new Function("getOrderInfo", Arrays.asList(),
					Arrays.asList(
						new TypeReference<Utf8String>() {},
						new TypeReference<Uint256>() {},
						new TypeReference<Utf8String>() {},
						new TypeReference<Utf8String>() {}, 
						new TypeReference<Utf8String>() {}, 
						new TypeReference<Utf8String>() {},
						new TypeReference<Utf8String>() {},
						new TypeReference<Uint256>() {}
					)
			);
			String encode = FunctionEncoder.encode(function);
			Transaction transaction = Transaction.createEthCallTransaction(userAddress, orderAddress, encode);
			Request<?, EthCall> request = web3j.ethCall(transaction, DefaultBlockParameterName.LATEST);
			EthCall response = request.send();
			String value = response.getResult();
			List<Type> list = FunctionReturnDecoder.decode(value, function.getOutputParameters());
			detail = new OrderDetail();
			detail.setGoodsPrice(list.get(0).getValue().toString());
			detail.setGoodsNum(list.get(1).getValue().toString());
			detail.setOrderPrice(list.get(2).getValue().toString());
			detail.setBuyerAddress(list.get(3).getValue().toString());
			detail.setSellerAddress(list.get(4).getValue().toString());
			detail.setBuyTime(list.get(5).getValue().toString());
			detail.setPayTime(list.get(6).getValue().toString());
			detail.setStatus(list.get(7).getValue().toString());
		} catch (IOException e) {
			e.printStackTrace();
		}
		return detail;
	} 

}

Servlet

BuyServlet

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package edu.wtbu.servlet;

import java.io.IOException;
import java.text.SimpleDateFormat;
import java.util.Date;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.alibaba.fastjson.JSON;

import edu.wtbu.dao.GoodsDao;
import edu.wtbu.dao.OrderDao;
import edu.wtbu.dao.UserDao;
import edu.wtbu.eth.EthService;
import edu.wtbu.pojo.Goods;
import edu.wtbu.pojo.Result;
import edu.wtbu.pojo.User;

/**
 * Servlet implementation class BuyServlet
 */
@WebServlet("/buy")
public class BuyServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	/**
	 * @see HttpServlet#HttpServlet()
	 */
	public BuyServlet() {
		super();
		// TODO Auto-generated constructor stub
	}

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
	 *      response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		response.setContentType("text/html;charset=utf8");
		String email = request.getParameter("email");
		int goodsId = 0;
		try {
			goodsId = Integer.parseInt(request.getParameter("goodsId"));
		} catch (Exception e) {
			goodsId = 0;
		}
		int goodsNum = 0;
		try {
			goodsNum = Integer.parseInt(request.getParameter("goodsNum"));
		} catch (Exception e) {
			goodsNum = 0;
		}
		Result result = new Result("fail", null);
		if (email == null || email.equals("")) {
			result.setData("登录信息失效，请重新登录！");
			response.getWriter().append(JSON.toJSONString(result));
			return;
		}
		Goods goods = GoodsDao.findGoodsById(goodsId);
		User user = UserDao.findByEmail(email);
		float goodsPrice = goods.getPrice();
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		String buyTime = sdf.format(new Date());
		String transactionHash = EthService.deployOrderContract(String.valueOf(goodsPrice), goodsNum,
				String.valueOf(goodsPrice * goodsNum), user.getAddress(), goods.getSellerAddress(), buyTime);
		if (transactionHash == null) {
			result.setData("购买失败！");
			response.getWriter().append(JSON.toJSONString(result));
			return;
		}
		int addResult = OrderDao.addOrder(goods.getImgUrl(), goods.getName(), goodsPrice * goodsNum, buyTime, 0,
				transactionHash, email);
		if (addResult > 0) {
			result.setFlag("success");
		}
		response.getWriter().append(JSON.toJSONString(result));
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
	 *      response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		doGet(request, response);
	}

}

PayServlet

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package edu.wtbu.servlet;

import java.io.IOException;
import java.math.BigDecimal;
import java.text.SimpleDateFormat;
import java.util.Date;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.alibaba.fastjson.JSON;

import edu.wtbu.dao.GoodsDao;
import edu.wtbu.dao.OrderDao;
import edu.wtbu.dao.UserDao;
import edu.wtbu.eth.EthService;
import edu.wtbu.pojo.Goods;
import edu.wtbu.pojo.Order;
import edu.wtbu.pojo.Result;
import edu.wtbu.pojo.User;

/**
 * Servlet implementation class PayServlet
 */
@WebServlet("/pay")
public class PayServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public PayServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		response.setContentType("text/html;charset=utf8");
		String email = request.getParameter("email");
		int orderId = 0;
		try {
			orderId = Integer.parseInt(request.getParameter("orderId"));
		} catch (Exception e) {
			orderId = 0;
		}
		Result result = new Result("fail", null);
		if (email == null || email.equals("")) {
			result.setData("登录信息失效，请重新登录！");
			response.getWriter().append(JSON.toJSONString(result));
			return;
		}
		User user = UserDao.findByEmail(email);
		String balance = EthService.getBalance(user.getAddress());
		Order order = OrderDao.findOrderById(orderId);
		float orderPrice = order.getOrderPrice();
		if (new BigDecimal(balance).compareTo(new BigDecimal(orderPrice)) < 0) {
			result.setData("余额不足，请充值！");
			response.getWriter().append(JSON.toJSONString(result));
			return;
		}
		Goods goods = GoodsDao.findGoodsByName(order.getGoodsName());
		Boolean payResult = EthService.transferEther(user.getAddress(), goods.getSellerAddress(),
				String.valueOf(order.getOrderPrice()), user.getPassword());
		if (!payResult) {
			result.setData("转账失败！");
			response.getWriter().append(JSON.toJSONString(result));
			return;
		}
		SimpleDateFormat sdf = new SimpleDateFormat("yyyy-MM-dd HH:mm:ss");
		String payTime = sdf.format(new Date());
		String orderAddress = EthService.getOrderAddressByHash(order.getTransactionHash());
		payResult = EthService.payOrder(user.getAddress(), orderAddress, payTime, user.getPassword());
		if (!payResult) {
			result.setData("更新合约失败！");
			response.getWriter().append(JSON.toJSONString(result));
			return;
		}
		int updateResult = OrderDao.updateOrder(orderId, payTime, 1, orderAddress);
		if (updateResult > 0) {
			result.setFlag("success");
		}
		response.getWriter().append(JSON.toJSONString(result));
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		// TODO Auto-generated method stub
		doGet(request, response);
	}

}

OrderListServlet

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package edu.wtbu.servlet;

import java.io.IOException;
import java.util.ArrayList;

import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.alibaba.fastjson.JSON;

import edu.wtbu.dao.OrderDao;
import edu.wtbu.pojo.Order;
import edu.wtbu.pojo.Result;

/**
 * Servlet implementation class OrderLisyServlet
 */
@WebServlet("/orderList")
public class OrderListServlet  extends HttpServlet {
	private static final long serialVersionUID = 1L;
       
    /**
     * @see HttpServlet#HttpServlet()
     */
    public OrderListServlet() {
        super();
        // TODO Auto-generated constructor stub
    }

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response)throws ServletException, IOException {
		response.setContentType("text/html;charset=utf8");
		String email = request.getParameter("email");
		Result result = new Result("fail", null);
		if (email == null || email.equals("")) {
			result.setData("登录信息失效，请登录后重试！");
			response.getWriter().append(JSON.toJSONString(result));
			return;
		}
		ArrayList<Order> list = OrderDao.findOrderListByEmail(email);
		result.setFlag("success");
		result.setData(list);
		response.getWriter().append(JSON.toJSONString(result));
	}
   

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		doGet(request, response);
	}

}

DetailServlet

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package edu.wtbu.servlet;

import java.io.IOException;
import javax.servlet.ServletException;
import javax.servlet.annotation.WebServlet;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import com.alibaba.fastjson.JSON;

import edu.wtbu.dao.OrderDao;
import edu.wtbu.dao.UserDao;
import edu.wtbu.eth.EthService;
import edu.wtbu.pojo.Order;
import edu.wtbu.pojo.OrderDetail;
import edu.wtbu.pojo.Result;
import edu.wtbu.pojo.User;

/**
 * Servlet implementation class DetailServlet
 */
@WebServlet("/orderDetail")
public class DetailServlet extends HttpServlet {
	private static final long serialVersionUID = 1L;

	/**
	 * @see HttpServlet#HttpServlet()
	 */
	public DetailServlet() {
		super();
		// TODO Auto-generated constructor stub
	}

	/**
	 * @see HttpServlet#doGet(HttpServletRequest request, HttpServletResponse
	 *      response)
	 */
	protected void doGet(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		response.setContentType("text/html;charset=utf8");
		String email = request.getParameter("email");
		int orderId = 0;
		try {
			orderId = Integer.parseInt(request.getParameter("orderId"));
		} catch (Exception e) {
			orderId = 0;
		}
		Result result = new Result("fail", null);
		if (email == null || email.equals("")) {
			result.setData("登录信息失效，请重新登录！");
			response.getWriter().append(JSON.toJSONString(result));
			return;
		}
		User user = UserDao.findByEmail(email);
		Order order = OrderDao.findOrderById(orderId);
		OrderDetail detail = EthService.getOrderInfo(user.getAddress(), order.getOrderAddress());
		detail.setOrderAddress(order.getOrderAddress());
		result.setFlag("success");
		result.setData(detail);
		response.getWriter().append(JSON.toJSONString(result));
	}

	/**
	 * @see HttpServlet#doPost(HttpServletRequest request, HttpServletResponse
	 *      response)
	 */
	protected void doPost(HttpServletRequest request, HttpServletResponse response)
			throws ServletException, IOException {
		// TODO Auto-generated method stub
		doGet(request, response);
	}

}

ByteCode

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