我有一个 json 文本文件，内容为
{"type":"session.ended","v":2,"post.source":"1306210600-col001.sv1.movenetworks.com:2097#5","post.ip4":"75.114.187.146","post.rtime_secs":1371794661,"post.rtime_text":"2013-06-21 06:04:20","post.time_secs":1371794596,"post.time_text":"2013-06-21 06:03:16","post.time_date":"2013-06-21","post.time_hour":6,"post.late_secs":65,"id.session":"3625657","id.sub":"2370b726-b96e-11e2-b3eb-1231380e1adf","id.partner":"0CB48A664E514CA48D378D152574EDBB","id.service":"BBTV (CBD46B77)","device.make":"Roku","device.model":"3050X","device.info":"Roku;3050X","device.serial":"12C241003940","device.version":"2.5.0.7","device.uuid":"51ce2255-62ad-5778-b2d7-b9543c1476c6","device.os":"Linux","device.os_version":"2.6.35","device.platform":"Roku","device.platform_vendor":"Move Networks","device.platform_version":"1.0.0.20130329","device.licenses":[],"user.type":"Subscriber","ip.provider":"netacuity","ip.postal_code":"48154","ip.dma":505,"ip.dma_name":"unknown","ip.city":"livonia","ip.country":"united states","ip.region":"michigan","ip.continent":"north america","ip.isp":"bright house networks llc","ip.asn":0,"ip.asn_owner":"?","clip.id":"1338713","clip.pub":"CBD46B77","asset.id":524768,"asset.pub":"CBD46B77","asset.length_ms":1800000,"asset.guid":"b7c12c09dc5aec832e142a00b0f191fa","asset.title":"Diya Aur Bati Hum","asset.type":"captured","asset.adult":false,"asset.franchise_guid":"941496e1452b4fce9acfe7b3339924eb","asset.franchise_title":"Diya Aur Bati Hum","container.id":14,"container.pub":"CBD46B77","container.guid":"3caa6afd715e4c57ac4750d29e449a9c","container.title":"SPLUS","usage.elapsed_ms":2312,"usage.viewed_ms":392,"usage.stage":"mainVideo","exp.idle_ms":350,"exp.stalls":0,"exp.stalled_ms":0,"exp.frame_renders":0,"exp.frame_drops":0,"exp.ghost_session_ms":0,"exp.ghost_sessions":0,"exp.qmx_stale_ms":0,"exp.qmx_error_ms":0,"exp.qss_late_ms":0,"exp.qss_error_ms":0,"exp.fom":0,"exp.fom_weight":0,"data.dl_bytes":228,"data.ul_bytes":406,"http.oks":2,"http.errors":0,"http.timeouts":0,"net.throughput":8977,"http.slows":0,"data.bitrate_mean":1968,"data.bitrate_stddev":0,"data.bitrate_median":1950,"data.bitrate_modes":[1950],"data.streamlets":1,"data.late_streamlets":0,"data.all_streamlets":0,"data.bf_streamlets":0,"data.ab_streamlets":0}
{"type":"session.started","v":2,"post.source":"1306210600-col004.sv1.movenetworks.com:2183#6","post.ip4":"63.225.172.43","post.rtime_secs":1371794671,"post.rtime_text":"2013-06-21 06:04:31","post.time_secs":1371794660,"post.time_text":"2013-06-21 06:04:20","post.time_date":"2013-06-21","post.time_hour":6,"post.late_secs":11,"id.session":"232169818","id.sub":"55d514ba-3858-11e2-91a7-12313d08e01f","id.partner":"0CB48A664E514CA48D378D152574EDBB","id.service":"BBTV (CBD46B77)","device.make":"Roku","device.model":"3100X","device.info":"Roku;3100X","device.serial":"13C2AE061481","device.version":"2.5.0.37","device.uuid":"7f5654d5-3aa7-5a5f-bb2b-8084da358942","device.os":"Linux","device.os_version":"2.6.35","device.platform":"Roku","device.platform_vendor":"Move Networks","device.platform_version":"1.0.0.20130615","device.licenses":[],"user.type":"Subscriber","ip.provider":"netacuity","ip.postal_code":"98115","ip.dma":819,"ip.dma_name":"unknown","ip.city":"seattle","ip.country":"united states","ip.region":"washington","ip.continent":"north america","ip.isp":"qwest communications company llc","ip.asn":0,"ip.asn_owner":"?","clip.id":"1339170","clip.pub":"CBD46B77","asset.id":522015,"asset.pub":"CBD46B77","asset.length_ms":7200000,"asset.guid":"c6938cfa200a21e90dce41f5ed131cc2","asset.title":"Spark Top 20","asset.type":"captured","asset.adult":false,"container.id":277,"container.pub":"CBD46B77","container.guid":"03e3a689e245457bba2f98c30ef931fa","container.title":"BIGMGC","usage.stage":"mainVideo","exp.idle_ms":5772}
我想将它加载到 R 中并转换为数据框。这里的字段名称是数据的一部分，而且每行中的字段数量也不相等（总共 13 行）
任何帮助将不胜感激。