{"id":485,"date":"2010-07-04T19:16:27","date_gmt":"2010-07-04T11:16:27","guid":{"rendered":"http:\/\/www.awaysoft.com\/taor\/?p=485"},"modified":"2013-12-23T11:13:16","modified_gmt":"2013-12-23T03:13:16","slug":"linux-c%e4%b8%admd5%e5%8a%a0%e5%af%86%e4%bb%a5%e5%8f%8amysql%e7%ae%80%e5%8d%95%e6%93%8d%e4%bd%9c","status":"publish","type":"post","link":"https:\/\/actom.me\/blog\/linux-c%e4%b8%admd5%e5%8a%a0%e5%af%86%e4%bb%a5%e5%8f%8amysql%e7%ae%80%e5%8d%95%e6%93%8d%e4%bd%9c.html","title":{"rendered":"Linux C\u4e2dmd5\u52a0\u5bc6\u4ee5\u53camysql\u7b80\u5355\u64cd\u4f5c"},"content":{"rendered":"<p>\u8fd9\u6bb5\u65f6\u95f4\u51c6\u5907\u5199\u4e2a\u5c0f\u722c\u866b\u6765\u73a9\u73a9\uff0c\u5f00\u59cb\u5b66\u4e60Linux\u4e0b\u7684\u7a0b\u5e8f\u8bbe\u8ba1\u3002<br \/>\n\u8003\u8651\u5230\u7a33\u5b9a\u6027\u7684\u539f\u56e0\uff0c\u4f18\u5148\u8003\u8651\u4f7f\u7528\u7cfb\u7edf\u81ea\u5e26\u7684\u5e93\u3002<br \/>\nmd5\uff0c\u4f7f\u7528\u4e86openssl\/md5.h\u8fd9\u4e2a\u5934\u3002\u81ea\u5df1\u5199\u4e86\u4e00\u4e2amd5\u5b57\u7b26\u4e32\u51fd\u6570\uff0c\u5982\u4e0b\uff1a<\/p>\n<pre class=\"lang:c decode:true\">#include&lt;openssl\/md5.h&gt;\r\nchar *md5(char *str)\r\n{\r\n\tMD5_CTX ctx;\r\n\tunsigned char md[MD5_DIGEST_LENGTH];\r\n\tchar *result = (char *)malloc(sizeof(char)*(MD5_DIGEST_LENGTH*2+1));\r\n\tint i;\r\n\tMD5_Init(&amp;ctx);\r\n\tMD5_Update(&amp;ctx,(void *)str,strlen(str));\r\n\tMD5_Final(md,&amp;ctx);\r\n\tfor (i=0;i&lt;MD5_DIGEST_LENGTH;i++)\r\n\t  sprintf(result+i*2,\"%02x\",md[i]);\r\n\treturn result;\r\n}<\/pre>\n<p>\u5728\u7f16\u8bd1\u7684\u65f6\u5019\u9047\u5230\u4e86\u4e2a\u95ee\u9898\uff0c\u63d0\u793a\u8fde\u63a5\u7684\u65f6\u5019\u627e\u4e0d\u5230MD5_Init\u7b49\uff0c\u5728\u7f16\u8bd1\u547d\u4ee4\u4e2d\u589e\u52a0-lcrypto\uff0c\u95ee\u9898\u89e3\u51b3\u3002<\/p>\n<p>\u518d\u5c31\u662fmysql\u7684\u64cd\u4f5c\u4e86\uff0c\u6211\u7684\u7cfb\u7edf\u662fFedora\uff0c\u9996\u5148\u5b89\u88c5mysql-devel\uff0c\u5373yum install mysql-devel\u3002<br \/>\n\u7136\u540e\uff0c\u81ea\u5df1\u5199\u4e86\u4e0b\u97623\u4e2a\u51fd\u6570\u7528\u6765\u64cd\u4f5c\u6570\u636e\u5e93\uff1a<\/p>\n<pre class=\"lang:c decode:true\">#include&lt;mysql\/mysql.h&gt;\r\ntypedef MYSQL *PMYSQL;\r\n\r\nPMYSQL Mysql_connect()\r\n{\r\n\tconst char *dbHost = \"127.0.0.1\";\r\n\tconst char *dbUser = \"root\";\r\n\tconst char *dbPass = \"yj61dxjm\";\r\n\tconst char *dbName = \"test\";\r\n\tunsigned dbPort = 3306;\r\n\tPMYSQL pmysql = NULL;\r\n\tif (!(pmysql = mysql_init(pmysql)))\r\n\t{\r\n\t\tfprintf(stderr,\"Mysql Server Inited Error!\\n\");\r\n\t\treturn NULL;\r\n\t}\r\n\tif (!mysql_real_connect(pmysql, dbHost, dbUser, dbPass, dbName, dbPort, NULL, 0))\r\n\t{\r\n\t\tfprintf(stderr,\"Mysql Connect Failed!\\n\");\r\n\t\treturn NULL;\r\n\t}\r\n\tif (mysql_query(pmysql, \"set names UTF8\"))\r\n\t{\r\n\t\tfprintf(stderr,\"Error%d : %s\\n\",mysql_errno(pmysql),mysql_error(pmysql));\r\n\t\treturn NULL;\r\n\t}\r\n\r\n\treturn pmysql;\r\n}\r\n\r\nMYSQL_RES * Mysql_query_select(PMYSQL pmysql,char *sql)\r\n{\r\n\tMYSQL_RES *res;\r\n\tif (mysql_query(pmysql,sql))\r\n\t{\r\n\t\tfprintf(stderr,\"Error%d : %s\\n\",mysql_errno(pmysql),mysql_error(pmysql));\r\n\t\treturn NULL;\r\n\t}\r\n\r\n\tif (!(res = mysql_store_result(pmysql)))\r\n\t{\r\n\t\tfprintf(stderr,\"Mysql Store Result Failed!\\n\");\r\n\t\treturn NULL;\r\n\t}\r\n\r\n\treturn res;\r\n}\r\n\r\nint Mysql_query(PMYSQL pmysql,char *sql)\r\n{\r\n\tif (mysql_query(pmysql,sql))\r\n\t{\r\n\t\tfprintf(stderr,\"Error%d : %s\\n\",mysql_errno(pmysql),mysql_error(pmysql));\r\n\t\treturn 0;\r\n\t}\r\n\treturn 1;\r\n}<\/pre>\n<p>\u5176\u4e2dMysql_connect()\u7528\u4e8e\u8fde\u63a5\u6570\u636e\u5e93\uff0cMysql_query()\u6267\u884c\u65e0\u8fd4\u56de\u503c\u7684SQL\u8bed\u53e5\uff0cMysql_query_select()\u7528\u4e8e\u6267\u884c\u6709\u8fd4\u56de\u503c\u7684SQL\u8bed\u53e5\u3002<br \/>\n\u4e0b\u9762\u7ed9\u51fa\u6211\u81ea\u5df1\u4f7f\u7528\u8fd9\u4e09\u4e2a\u51fd\u6570\u7684\u4f8b\u5b50\uff1a<\/p>\n<pre class=\"lang:c decode:true crayon-selected\">\tPMYSQL pmysql;\r\n\tMYSQL_RES *res;\r\n\tMYSQL_ROW row;\r\n\tint i,temp;\r\n\tpmysql = Mysql_connect(); \/\/\u8fde\u63a5\u6570\u636e\u5e93\r\n\r\n\tMysql_query(pmysql,\"insert into urls(website,hash,type,pagerank,links,time,score) values(\\\"www.baidu.com5\\\",\\\"aklsdjflkaj5\\\",\\\"0\\\",\\\"9\\\",\\\"1000\\\",\\\"2010-01-01 00:00:00\\\",\\\"100\\\")\");\/\/\u6267\u884cinsert\u8bed\u53e5\uff0cdelete,update\u7528\u6cd5\u4e00\u6837\uff0c\u8fd4\u56de1\u8868\u793a\u6267\u884c\u6210\u529f\uff0c\u8fd4\u56de0\u8868\u793a\u6267\u884c\u5931\u8d25\u3002\t\r\n\r\n\tres = Mysql_query_select(pmysql,\"select * from urls\"); \/\/\u67e5\u8be2\u6570\u636e\u5e93\r\n\tfor (i=0;i&lt;res-&gt;field_count;i++)\r\n\t{\r\n\t\ttemp = (res-&gt;fields[i].max_length&gt;res-&gt;fields[i].name_length?res-&gt;fields[i].max_length:res-&gt;fields[i].name_length);\/\/\u5bf9\u6bd4\u5b57\u6bb5\u540d\u548c\u5b57\u6bb5\u4e2d\u6700\u957f\u5b57\u7b26\u4e32\u7684\u957f\u5ea6\uff0c\u8fd4\u56de\u8f83\u5927\u503c\r\n\t\tsprintf(s,\"%%-%ds \",temp);\/\/\u8bbe\u7f6e\u8f93\u51fa\u683c\u5f0f\r\n\t\tprintf(s,res-&gt;fields[i].name,res-&gt;fields[i].max_length);\t\/\/\u8f93\u51fa\u8868\u5934\r\n\t}\r\n\tprintf(\"\\n\");\r\n\twhile((row = mysql_fetch_row(res))!=0)\r\n\t{\r\n\t\tfor (i=0;i&lt;res-&gt;field_count;i++){\r\n\t\t\ttemp = (res-&gt;fields[i].max_length&gt;res-&gt;fields[i].name_length?res-&gt;fields[i].max_length:res-&gt;fields[i].name_length);\r\n\t\t\tsprintf(s,\"%%-%ds \",temp);\r\n\t\t\tprintf(s,row[i]);\/\/\u8f93\u51fa\u8868\u5185\u5bb9\r\n\t\t}\r\n\t\tprintf(\"\\n\");\r\n\r\n\t}<\/pre>\n<p>MYSQL_RES\u8fd9\u662f\u975e\u5e38\u6709\u7528\u7684\u4e00\u4e2a\u7ed3\u6784\uff0c\u9700\u8981\u4e86\u89e3\u8be6\u7ec6\u60c5\u51b5\u7684\uff0c\u53ef\u4ee5\u53bbmysql.h\u4e2d\u67e5\u770b\u3002\u3002<br \/>\nmysql\u7f16\u8bd1\u7684\u65f6\u5019\uff0c\u9047\u5230\u4e86\u4e00\u4e9b\u95ee\u9898\u3002\u9996\u5148\u662f\u8981\u52a0\u7f16\u8bd1\u6761\u4ef6-lmysqlclient\uff0c\u4f46\u662f\uff0c\u4e0d\u77e5\u9053\u4e3a\u4ec0\u4e48\u5728\u6211\u7684Fedora\u4e2d\u63d0\u793a\u6ca1\u6709\u627e\u5230mysqlclient\u5e93\uff0c\u540e\u6765\u589e\u52a0\u4e86-L\/usr\/lib\/mysql \u540e\u6210\u529f\u7f16\u8bd1\u3002<br \/>\n\u5373 gcc -o testmysql testmysql.c -Wall -lmysqlclient -L\/usr\/lib\/mysql<br \/>\n\u5f53\u7136\uff0cmysql\u5e93\u8fd8\u6709\u5f88\u591a\u66f4\u52a0\u9ad8\u7ea7\u7684\u7528\u6cd5\uff0c\u56e0\u4e3a\u6211\u7528\u4e0d\u5230\uff0c\u4e5f\u5c31\u4e0d\u505a\u7814\u7a76\u4e86\u3002<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u8fd9\u6bb5\u65f6\u95f4\u51c6\u5907\u5199\u4e2a\u5c0f\u722c\u866b\u6765\u73a9\u73a9\uff0c\u5f00\u59cb\u5b66\u4e60Linux\u4e0b\u7684\u7a0b\u5e8f\u8bbe\u8ba1\u3002 \u8003\u8651\u5230\u7a33\u5b9a\u6027\u7684\u539f &#8230; <a class=\"more-link\" href=\"https:\/\/actom.me\/blog\/linux-c%e4%b8%admd5%e5%8a%a0%e5%af%86%e4%bb%a5%e5%8f%8amysql%e7%ae%80%e5%8d%95%e6%93%8d%e4%bd%9c.html\">Read More &raquo;<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1],"tags":[],"_links":{"self":[{"href":"https:\/\/actom.me\/blog\/wp-json\/wp\/v2\/posts\/485"}],"collection":[{"href":"https:\/\/actom.me\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/actom.me\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/actom.me\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/actom.me\/blog\/wp-json\/wp\/v2\/comments?post=485"}],"version-history":[{"count":8,"href":"https:\/\/actom.me\/blog\/wp-json\/wp\/v2\/posts\/485\/revisions"}],"predecessor-version":[{"id":926,"href":"https:\/\/actom.me\/blog\/wp-json\/wp\/v2\/posts\/485\/revisions\/926"}],"wp:attachment":[{"href":"https:\/\/actom.me\/blog\/wp-json\/wp\/v2\/media?parent=485"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/actom.me\/blog\/wp-json\/wp\/v2\/categories?post=485"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/actom.me\/blog\/wp-json\/wp\/v2\/tags?post=485"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}