at_cgdcont.java

自己实现的基于串口通讯发送短消息的低层协议JAVA代码

package com.jzl.sirius.at.command;

import java.nio.CharBuffer;
import java.util.ArrayList;
import java.util.List;

import com.jzl.sirius.at.ATConstants;

/**
 * @author xujian
 * @version 2.0
 * @see com.jzl.sirius.at.ATCommand
 * @see com.jzl.sirius.at.command.ATCommandBase
 */
public class AT_CGDCONT extends ATCommandBase {

	private int commandType;

	private StringBuffer command = new StringBuffer();

	private String[] PDPContexts = new String[0];

	private String[] supportedPDPContexts = new String[0];

	
	/**
	 * 构造函数 提供"AT+CGDCONT?"的AT命令
	 */
	public AT_CGDCONT() {
		this(false);
	}

	/**
	 * 构造函数 提供"AT+CGDCONT=?"的AT命令或"AT+CGDCONT?"的AT命令
	 * 
	 * @param tested
	 *            当为true时提供"AT+CGDCONT=?"的AT命令，当为false时提供"AT+CGDCONT?"的AT命令。
	 */
	public AT_CGDCONT(boolean tested) {
		commandType = tested ? COMMAND_TYPE_TEST : COMMAND_TYPE_READ;
		command.append(tested ? "AT+CGDCONT=?" : "AT+CGDCONT?");
		command.append(ATConstants.CR);
	}

	/**
	 * 构造函数 提供"AT+CGDCONT=int"的AT命令
	 * 
	 * @param cid
	 *            PDP context identifier,range: 1-4
	 */
	public AT_CGDCONT(int cid) {
        command.append("AT+CGDCONT=");
        command.append(cid);
        command.append(ATConstants.CR);
	}

	/**
	 * 构造函数 提供"AT+CGDCONT=int,str"的AT命令
	 * 
	 * @param cid
	 *            PDP context identifier,range: 1-4
	 * @param pdpType
	 *            type of packet data protocol,"IP" Internet Protocol (IETF STD
	 *            5),"PPP" Point to Point Protocol (IETF STD 51)
	 */
	public AT_CGDCONT(int cid, String pdpType) {
        command.append("AT+CGDCONT=");
        command.append(cid);
        command.append(",\"");
        command.append(pdpType);
        command.append("\"");
        command.append(ATConstants.CR);
	}

	/**
	 * 构造函数 提供"AT+CGDCONT=int,str,str"的AT命令
	 * 
	 * @param cid
	 *            PDP context identifier,range: 1-4
	 * @param pdpType
	 *            type of packet data protocol,"IP" Internet Protocol (IETF STD
	 *            5),"PPP" Point to Point Protocol (IETF STD 51)
	 * @param apn
	 *            access point name: logical name that is used to select the
	 *            GGSN or the external packet data network.
	 */
	public AT_CGDCONT(int cid, String pdpType, String apn) {
        command.append("AT+CGDCONT=");
        command.append(cid);
        command.append(",\"");
        command.append(pdpType);
        command.append("\",\"");
        command.append(apn);
        command.append("\"");
        command.append(ATConstants.CR);
	}

	/**
	 * 构造函数 提供"AT+CGDCONT=int,str,str,str"的AT命令
	 * 
	 * @param cid
	 *            PDP context identifier,range: 1-4
	 * @param pdpType
	 *            type of packet data protocol,"IP" Internet Protocol (IETF STD
	 *            5),"PPP" Point to Point Protocol (IETF STD 51)
	 * @param apn
	 *            access point name: logical name that is used to select the
	 *            GGSN or the external packet data network.
	 * @param pdpAddr
	 *            PDP address: identifies the MT in the address space applicable
	 *            to the PDP
	 */
	public AT_CGDCONT(int cid, String pdpType, String apn, String pdpAddr) {
        command.append("AT+CGDCONT=");
        command.append(cid);
        command.append(",\"");
        command.append(pdpType);
        command.append("\",\"");
        command.append(apn);
        command.append("\",\"");
        command.append(pdpAddr);
        command.append("\"");
        command.append(ATConstants.CR);
	}

	/**
	 * 构造函数 提供"AT+CGDCONT=int,str,str,str,int"的AT命令
	 * 
	 * @param cid
	 *            PDP context identifier,range: 1-4
	 * @param pdpType
	 *            type of packet data protocol,"IP" Internet Protocol (IETF STD
	 *            5),"PPP" Point to Point Protocol (IETF STD 51)
	 * @param apn
	 *            access point name: logical name that is used to select the
	 *            GGSN or the external packet data network.
	 * @param pdpAddr
	 *            PDP address: identifies the MT in the address space applicable
	 *            to the PDP
	 * @param dcomp
	 *            PDP data compression mode,0 OFF (default value),1 ON
	 */
	public AT_CGDCONT(int cid, String pdpType, String apn, String pdpAddr, int dcomp) {
        command.append("AT+CGDCONT=");
        command.append(cid);
        command.append(",\"");
        command.append(pdpType);
        command.append("\",\"");
        command.append(apn);
        command.append("\",\"");
        command.append(pdpAddr);
        command.append("\",");
        command.append(dcomp);
        command.append(ATConstants.CR);
	}

	/**
	 * 构造函数 提供"AT+CGDCONT=int,str,str,str,int,int"的AT命令
	 * 
	 * @param cid
	 *            PDP context identifier,range: 1-4
	 * @param pdpType
	 *            type of packet data protocol,"IP" Internet Protocol (IETF STD
	 *            5),"PPP" Point to Point Protocol (IETF STD 51)
	 * @param apn
	 *            access point name: logical name that is used to select the
	 *            GGSN or the external packet data network.
	 * @param pdpAddr
	 *            PDP address: identifies the MT in the address space applicable
	 *            to the PDP
	 * @param dcomp
	 *            PDP data compression mode,0 OFF (default value),1 ON
	 * @param hcomp
	 *            PDP header compression mode,0 OFF (default value),1 ON
	 */
	public AT_CGDCONT(int cid, String pdpType, String apn, String pdpAddr, int dcomp, int hcomp) {
        command.append("AT+CGDCONT=");
        command.append(cid);
        command.append(",\"");
        command.append(pdpType);
        command.append("\",\"");
        command.append(apn);
        command.append("\",\"");
        command.append(pdpAddr);
        command.append("\",");
        command.append(dcomp);
        command.append(",");
        command.append(hcomp);
        command.append(ATConstants.CR);
	}
    
    public String buildCommand() {
        return command.toString();
    }
    
    private List<String> decodeCGDCONT(String str) {
        String startToken = ATConstants.CRLF + "+CGDCONT:";
        ArrayList<String> results = new ArrayList<String>();
        while(true) {
            int pos = str.indexOf(startToken);
            if (pos == -1)
                break;
            str = str.substring(pos + startToken.length());
            pos = str.indexOf(ATConstants.CRLF);
            if (pos == -1)
                break;
            
            String result = str.substring(0, pos).trim();
            results.add(result);
            
            str = str.substring(pos);
        }
        
        return results;
    }

    protected void decodeOkResponse(CharBuffer response) {
        String str = response.toString();
        
        try {
            if (commandType == COMMAND_TYPE_READ) {
                // format:<CR><LF>+CGDCONT:
                // <cid>,<PDP_type>,<APN>,<PDP_addr>,<d_comp>,<h_comp><CR><LF><CR><LF>
                // [+CGDCONT:
                // <cid>,<PDP_type>,<APN>,<PDP_addr>,<d_comp>,<h_comp>
                // […]]
                // <CR><LF><CR><LF>OK<CR><LF>
                PDPContexts = (String[])decodeCGDCONT(str).toArray(new String[0]);
                
                
            } else if (commandType == COMMAND_TYPE_TEST) {
                // format:<CR><LF>+CGDCONT: (list of supported
                // <cid>s),<PDP_type>,,,(list of
                // supported <d_comp>s),(list of supported <h_comp>s)
                // [+CGDCONT: (list of supported <cid>s),<PDP_type>,,,(list of
                // supported <d_comp>s),(list of supported <h_comp>s)
                // […]]
                // <CR><LF><CR><LF>OK<CR><LF>
                supportedPDPContexts = (String[])decodeCGDCONT(str).toArray(new String[0]);;
            }
        }
        catch(Exception ex) {
            
        }
    }

    /**
     * 取得设备的当前的“PDP Context”值，返回值的类型为String[]，其中每一个元素的值的格式为：<br>
     * cid,PDP_type,APN,PDP_addr,d_comp,h_comp
     * 
     * @return 取得设备的当前的“PDP Context”值
     */
    public String[] getPDPContexts() {
        return PDPContexts;
    }

    /**
     * 取得设备所支持的“PDP Context”值，返回值的类型为String[]，其中每一个元素的值的格式为：<br>
     * supported cids,supported PDP_types,supported APNs,supported
     * PDP_addrs,supported d_comp,h_comps
     * 
     * @return 取得设备所支持的“PDP Context”值
     */
    public String[] getSupportedPDPContexts() {
        return supportedPDPContexts;
    }


}