如何往jpg图片中读写数据,非Exif信息?
从图片中解析的是以下这段json?
{"id":"10003653_DZSL","xxx":114.322386230469,"yyy":34.8017104492188,"xx":"114.322386230469","yy":"34.8017104492188","nd":353,"date":"2011/5/25","minp":-1,"maxp":-1,"mint":-1,"maxt":-1,"minz":-1,"maxz":-1,"dp":0,"dt":0,"dz":1.570796,"bw":1920,"bh":320,"nw":3072,"nh":512,"fw":6144,"fh":1024,"bs":512,"ns":512,"fs":512,"ctry":"Saudi","prov":"","city":"0378","ctnm":"","dist":"","sns":"","road":"","plt1":"","plt2":"","plte":"","pois":"","tp":"[\"10003653_DZSL\",[[173,\"10003654_QX3L\"],[168,\"10003655_Z6SA\"]],[[\"10003654_QX3L\",114.322321072049,34.8017179904514],[\"10003655_Z6SA\",114.322278103299,34.8017323676215],[\"10003656_WYIM\",114.322246771918,34.8017545572917],[\"10003657_XD78\",114.322218451606,34.8017855902778],[\"10003658_R1CY\",114.322201850043,34.8018197699653],[\"10016991_C7I0\",114.322175211589,34.8017165527344],[\"10016992_TU7I\",114.322182779948,34.8017560492622],[\"10022400_G0QS\",114.322580837674,34.8016612141927],[\"10022401_8L1M\",114.322533311632,34.8016625434028],[\"10022402_FCF8\",114.322485107422,34.8016634385851],[\"10022403_96TT\",114.322441596137,34.8016634114583],[\"10022404_SU4J\",114.322397759332,34.8016648491753],[\"10022405_QDAX\",114.322354356554,34.8016687282986],[\"10022406_Z2I2\",114.322309950087,34.8016685112847],[\"10022407_WW80\",114.32226546224,34.8016713053385],[\"10022408_XJVI\",114.322219346788,34.8016740722656]]]","ptype":"0"}
图片如何解析出json?,不解
从图片中解析出json?
向jpg中读写数据?楼主是要用代码画图吗?这得了解jpg的文件格式才行啊。