使用loadrunner进行压力测试之----post请求
作者：互联网
使用web_submit_data 发送post请求
1. 发送post请求时使用web_submit_data
如：
1 web_submit_data("create",//事务名 2 "Action=http://bizhi.sogou.com/diy/", //请求域名 3 "Method=POST", //请求类型为post 4 "RecContentType=application/json", //返回格式为json 5 "Referer=http://bizhi.sogou.com/diy?wp_id=8743", 6 "Snapshot=t4.inf", 7 "Mode=HTML", 8 ITEMDATA, //下面编辑post请求的数据 9 "Name=img", "Value=http://dl.bizhi.sogou.com/images/2012/05/3/8743.jpg", ENDITEM, //数据的name、value及结束符10 "Name=left", "Value=60", ENDITEM, //第二条数据的name、value及结束符11 "Name=top", "Value=30", ENDITEM,12 "Name=width", "Value=720", ENDITEM,13 "Name=height", "Value=450", ENDITEM,14 "Name=model", "Value=5/5s", ENDITEM,15 "Name=x", "Value=1", ENDITEM,16 "Name=y", "Value=1", ENDITEM,17 "Name=ofc", "Value=1", ENDITEM,18 "Name=wp_id", "Value=8743", ENDITEM,19 "Name=mat", "Value=ms", ENDITEM,20 "Name=curMode", "Value=normal", ENDITEM,21 LAST);2. 如果要发送的请求的数据值需要变化，那么需要将请求中的值参数化，，如果是根据上一条请求的返回值来确定请求中的数据值，那么需要对上一条请求的返回值进行解析
如：
1 web_submit_data("create", 2 "Action=http://bizhi.sogou.com/diy/", 3 "Method=POST", 4 "RecContentType=application/json", 5 "Referer=http://bizhi.sogou.com/diy?wp_id=8743", 6 "Snapshot=t4.inf", 7 "Mode=HTML", 8 ITEMDATA, 9 "Name=img", "Value=http://dl.bizhi.sogou.com/images/2012/05/3/8743.jpg", ENDITEM,10 "Name=left", "Value=60", ENDITEM,11 "Name=top", "Value=30", ENDITEM,12 "Name=width", "Value=720", ENDITEM,13 "Name=height", "Value=450", ENDITEM,14 "Name=model", "Value=5/5s", ENDITEM,15 "Name=x", "Value=1", ENDITEM,16 "Name=y", "Value=1", ENDITEM,17 "Name=ofc", "Value=1", ENDITEM,18 "Name=wp_id", "Value=8743", ENDITEM,19 "Name=mat", "Value=ms", ENDITEM,20 "Name=curMode", "Value=normal", ENDITEM,21 LAST);//请求122 23 lr_set_debug_message( 16 | 2,0 );24 lr_save_string((char*)strtok(lr_eval_string("{Output}"),","),"temp");//获得请求1的返回数据25 //lr_output_message("bian:%s",lr_eval_string("{temp}"));26 lr_save_string((char*)strtok(NULL,","),"diyid_temp");//解析返回数据27 //lr_output_message("bian2:%s",lr_eval_string("{diyid_temp}"));28 lr_save_string((char*)strtok(lr_eval_string("{diyid_temp}"),":"),"temp");//解析返回数据29 //lr_output_message("bian:%s",lr_eval_string("{temp}"));30 lr_save_string((char*)strtok(NULL,":"),"diyid_temp");//解析返回数据31 //lr_output_message("bian2:%s",lr_eval_string("{diyid_temp}"));32 diyid_str=(char*)strtok(lr_eval_string("{diyid_temp}"),"}");33 lr_save_string((char*)strtok(lr_eval_string("{diyid_temp}"),"}"),"diyid");//解析返回数据34 //lr_output_message("bian:%s",lr_eval_string("{diyid}"));35 36 strcat(test, diyid_str);37 //lr_output_message("%s",test);38 lr_save_string(CMd5(test),"md5");//计算md539 //lr_output_message("bianmd5:%s",lr_eval_string("{md5}"));40 41 42 web_submit_data("postname",43 "Action=http://bizhi.sogou.com/orderpay/",44 "Method=POST",45 "RecContentType=textml",46 "Mode=HTML",47 ITEMDATA,48 "Name=goods_action","Value=goods_detail",ENDITEM,49 "Name=goods_addr","Value=656",ENDITEM,50 "Name=md5str","Value={md5}",ENDITEM,//根据参数构造请求51 "Name=diy_id","Value={diyid}",ENDITEM,//根据参数构造请求52 "Name=goods_info","Value=448_1",ENDITEM,53 "Name=from","Value=diy",ENDITEM,54 "Name=Accept","Value=text/plain",ENDITEM,55 LAST);3. 另附，计算md5，需要添加md5的头文件，并别忘了在gloab.h中include md5.h
1 #ifndef MD5_H 2 #define MD5_H 3 #ifdef __alpha 4 typedef unsigned int uint32; 5 #else 6 typedef unsigned long uint32; 7 #endif 8 struct MD5Context { 9 uint32 buf[4]; 10 uint32 bits[2]; 11 unsigned char in[64]; 12 }; 13 extern void MD5Init(); 14 extern void MD5Update(); 15 extern void MD5Final(); 16 extern void MD5Transform(); 17 typedef struct MD5Context MD5_CTX; 18 #endif 19 #ifdef sgi 20 #define HIGHFIRST 21 #endif 22 #ifdef sun 23 #define HIGHFIRST 24 #endif 25 #ifndef HIGHFIRST 26 #define byteReverse(buf, len) /* Nothing */ 27 #else 28 void byteReverse(buf, longs)unsigned char *buf; unsigned longs; 29 { 30 uint32 t; 31 do { 32 t = (uint32) ((unsigned) buf[3] << 8 | buf[2]) << 16 |((unsigned) buf[1] << 8 | buf[0]); 33 *(uint32 *) buf = t; 34 buf += 4; 35 } while (--longs); 36 } 37 #endif 38 void MD5Init(ctx)struct MD5Context *ctx; 39 { 40 ctx->buf[0] = 0x67452301; 41 ctx->buf[1] = 0xefcdab89; 42 ctx->buf[2] = 0x98badcfe; 43 ctx->buf[3] = 0x10325476; 44 ctx->bits[0] = 0; 45 ctx->bits[1] = 0; 46 } 47 void MD5Update(ctx, buf, len) struct MD5Context *ctx; unsigned char *buf; unsigned len; 48 { 49 uint32 t; 50 t = ctx->bits[0]; 51 if ((ctx->bits[0] = t + ((uint32) len << 3)) < t) 52 ctx->bits[1]++; 53 ctx->bits[1] += len >> 29; 54 t = (t >> 3) & 0x3f; 55 if (t) { 56 unsigned char *p = (unsigned char *) ctx->in + t; 57 t = 64 - t; 58 if (len < t) { 59 memcpy(p, buf, len); 60 return; 61 } 62 memcpy(p, buf, t); 63 byteReverse(ctx->in, 16); 64 MD5Transform(ctx->buf, (uint32 *) ctx->in); 65 buf += t; 66 len -= t; 67 } 68 while (len >= 64) { 69 memcpy(ctx->in, buf, 64); 70 byteReverse(ctx->in, 16); 71 MD5Transform(ctx->buf, (uint32 *) ctx->in); 72 buf += 64; 73 len -= 64; 74 } 75 memcpy(ctx->in, buf, len); 76 } 77 void MD5Final(digest, ctx) 78 unsigned char digest[16]; struct MD5Context *ctx; 79 { 80 unsigned count; 81 unsigned char *p; 82 count = (ctx->bits[0] >> 3) & 0x3F; 83 p = ctx->in + count; 84 *p++ = 0x80; 85 count = 64 - 1 - count; 86 if (count < 8) { 87 memset(p, 0, count); 88 byteReverse(ctx->in, 16); 89 MD5Transform(ctx->buf, (uint32 *) ctx->in); 90 memset(ctx->in, 0, 56); 91 } else { 92 memset(p, 0, count - 8); 93 } 94 byteReverse(ctx->in, 14); 95 ((uint32 *) ctx->in)[14] = ctx->bits[0]; 96 ((uint32 *) ctx->in)[15] = ctx->bits[1]; 97 MD5Transform(ctx->buf, (uint32 *) ctx->in); 98 byteReverse((unsigned char *) ctx->buf, 4); 99 memcpy(digest, ctx->buf, 16);100 memset(ctx, 0, sizeof(ctx));101 }102 #define F1(x, y, z) (z ^ (x & (y ^ z)))103 #define F2(x, y, z) F1(z, x, y)104 #define F3(x, y, z) (x ^ y ^ z)105 #define F4(x, y, z) (y ^ (x | ~z))106 #define MD5STEP(f, w, x, y, z, data, s) ( w += f(x, y, z) + data, w = w<<s | w>>(32-s), w += x )107 void MD5Transform(buf, in)108 uint32 buf[4]; uint32 in[16];109 {110 register uint32 a, b, c, d;111 a = buf[0];112 b = buf[1];113 c = buf[2];114 d = buf[3];115 MD5STEP(F1, a, b, c, d, in[0] + 0xd76aa478, 7);116 MD5STEP(F1, d, a, b, c, in[1] + 0xe8c7b756, 12);117 MD5STEP(F1, c, d, a, b, in[2] + 0x242070db, 17);118 MD5STEP(F1, b, c, d, a, in[3] + 0xc1bdceee, 22);119 MD5STEP(F1, a, b, c, d, in[4] + 0xf57c0faf, 7);120 MD5STEP(F1, d, a, b, c, in[5] + 0x4787c62a, 12);121 MD5STEP(F1, c, d, a, b, in[6] + 0xa8304613, 17);122 MD5STEP(F1, b, c, d, a, in[7] + 0xfd469501, 22);123 MD5STEP(F1, a, b, c, d, in[8] + 0x698098d8, 7);124 MD5STEP(F1, d, a, b, c, in[9] + 0x8b44f7af, 12);125 MD5STEP(F1, c, d, a, b, in[10] + 0xffff5bb1, 17);126 MD5STEP(F1, b, c, d, a, in[11] + 0x895cd7be, 22);127 MD5STEP(F1, a, b, c, d, in[12] + 0x6b901122, 7);128 MD5STEP(F1, d, a, b, c, in[13] + 0xfd987193, 12);129 MD5STEP(F1, c, d, a, b, in[14] + 0xa679438e, 17);130 MD5STEP(F1, b, c, d, a, in[15] + 0x49b40821, 22);131 MD5STEP(F2, a, b, c, d, in[1] + 0xf61e2562, 5);132 MD5STEP(F2, d, a, b, c, in[6] + 0xc040b340, 9);133 MD5STEP(F2, c, d, a, b, in[11] + 0x265e5a51, 14);134 MD5STEP(F2, b, c, d, a, in[0] + 0xe9b6c7aa, 20);135 MD5STEP(F2, a, b, c, d, in[5] + 0xd62f105d, 5);136 MD5STEP(F2, d, a, b, c, in[10] + 0x02441453, 9);137 MD5STEP(F2, c, d, a, b, in[15] + 0xd8a1e681, 14);138 MD5STEP(F2, b, c, d, a, in[4] + 0xe7d3fbc8, 20);139 MD5STEP(F2, a, b, c, d, in[9] + 0x21e1cde6, 5);140 MD5STEP(F2, d, a, b, c, in[14] + 0xc33707d6, 9);141 MD5STEP(F2, c, d, a, b, in[3] + 0xf4d50d87, 14);142 MD5STEP(F2, b, c, d, a, in[8] + 0x455a14ed, 20);143 MD5STEP(F2, a, b, c, d, in[13] + 0xa9e3e905, 5);144 MD5STEP(F2, d, a, b, c, in[2] + 0xfcefa3f8, 9);145 MD5STEP(F2, c, d, a, b, in[7] + 0x676f02d9, 14);146 MD5STEP(F2, b, c, d, a, in[12] + 0x8d2a4c8a, 20);147 MD5STEP(F3, a, b, c, d, in[5] + 0xfffa3942, 4);148 MD5STEP(F3, d, a, b, c, in[8] + 0x8771f681, 11);149 MD5STEP(F3, c, d, a, b, in[11] + 0x6d9d6122, 16);150 MD5STEP(F3, b, c, d, a, in[14] + 0xfde5380c, 23);151 MD5STEP(F3, a, b, c, d, in[1] + 0xa4beea44, 4);152 MD5STEP(F3, d, a, b, c, in[4] + 0x4bdecfa9, 11);153 MD5STEP(F3, c, d, a, b, in[7] + 0xf6bb4b60, 16);154 MD5STEP(F3, b, c, d, a, in[10] + 0xbebfbc70, 23);155 MD5STEP(F3, a, b, c, d, in[13] + 0x289b7ec6, 4);156 MD5STEP(F3, d, a, b, c, in[0] + 0xeaa127fa, 11);157 MD5STEP(F3, c, d, a, b, in[3] + 0xd4ef3085, 16);158 MD5STEP(F3, b, c, d, a, in[6] + 0x04881d05, 23);159 MD5STEP(F3, a, b, c, d, in[9] + 0xd9d4d039, 4);160 MD5STEP(F3, d, a, b, c, in[12] + 0xe6db99e5, 11);161 MD5STEP(F3, c, d, a, b, in[15] + 0x1fa27cf8, 16);162 MD5STEP(F3, b, c, d, a, in[2] + 0xc4ac5665, 23);163 MD5STEP(F4, a, b, c, d, in[0] + 0xf4292244, 6);164 MD5STEP(F4, d, a, b, c, in[7] + 0x432aff97, 10);165 MD5STEP(F4, c, d, a, b, in[14] + 0xab9423a7, 15);166 MD5STEP(F4, b, c, d, a, in[5] + 0xfc93a039, 21);167 MD5STEP(F4, a, b, c, d, in[12] + 0x655b59c3, 6);168 MD5STEP(F4, d, a, b, c, in[3] + 0x8f0ccc92, 10);169 MD5STEP(F4, c, d, a, b, in[10] + 0xffeff47d, 15);170 MD5STEP(F4, b, c, d, a, in[1] + 0x85845dd1, 21);171 MD5STEP(F4, a, b, c, d, in[8] + 0x6fa87e4f, 6);172 MD5STEP(F4, d, a, b, c, in[15] + 0xfe2ce6e0, 10);173 MD5STEP(F4, c, d, a, b, in[6] + 0xa3014314, 15);174 MD5STEP(F4, b, c, d, a, in[13] + 0x4e0811a1, 21);175 MD5STEP(F4, a, b, c, d, in[4] + 0xf7537e82, 6);176 MD5STEP(F4, d, a, b, c, in[11] + 0xbd3af235, 10);177 MD5STEP(F4, c, d, a, b, in[2] + 0x2ad7d2bb, 15);178 MD5STEP(F4, b, c, d, a, in[9] + 0xeb86d391, 21);179 buf[0] += a;180 buf[1] += b;181 buf[2] += c;182 buf[3] += d;183 }184 char* CMd5(const char* s)185 {186 struct MD5Context md5c;187 unsigned char ss[16];188 char subStr[3],resStr[33];189 int i;190 MD5Init( &md5c );191 MD5Update( &md5c, s, strlen(s) );192 MD5Final( ss, &md5c );193 strcpy(resStr,"");194 for( i=0; i<16; i++ )195 {196 sprintf(subStr, "%02x", ss[i] );197 itoa(ss[i],subStr,16);198 if (strlen(subStr)==1) {199 strcat(resStr,"0");200 }201 strcat(resStr,subStr);202 }203 strcat(resStr,"\0");204 return resStr;205 }4. 如果一个action中有两个请求，那么压测是看到的响应时间曲线是两个请求综合的响应时间，如果要区分每个请求的响应时间，可加入请求开始/结束标记
1 lr_start_transaction(“create”);//插入结束标记，从此结束计时2 lr_end_transaction(“create”, LR_AUTO);//插入结束标记，从此结束计时
转自：51testing论坛
标签：ENDITEM,MD5STEP,loadrunner,ctx,Value,----,post,buf,Name 来源： https://blog.51cto.com/u_13771903/2725182